Public bug reported: Hi, This is probably the most unexpected bug that I have ever seen. Fortunately, it is benign.
How to reproduce: - Go to the webpage https://www.w3schools.com/howto/howto_js_autocomplete.asp - Type Ctrl+f to look for a work through the webpage. - Search for addEventListener. Firefox successfully found 4 occurrences on the webpage. - Using the arrows next to the search box, loop through all occurrences. Firefox then loops for the following occurrences: 1 inp.addEventListener("input", function(e) { 2 b.addEventListener("click", function(e) { 3 inp.addEventListener("keydown", function(e) { (although it is hidden by the message about cookies) 4 document.addEventListener("click", function (e) { 5 Loops back to the first occurrence inp.addEventListener("input", function(e) { 6 Again the second occurrence: b.addEventListener("click", function(e) { 7 Directly to the fourth occurrence, missing the third one: document.addEventListener("click", function (e) { 8 (goes back to 5). In other words, although the first cycle through all occurrences was correct, the following cycles misses the third occurrence! I have restarted Firefox and still gets this behaviour. If instead of clicking on the “down” arrow to look for the second occurrence, then it is “b.addEventListener("click", function(e) {” which is missing from the loop: it seems that whenever cycling through all occurrences of a search in a webpage, if there is only four occurrences, then the third one is never reached except in the first cycle. I am sending a screenshot of the situation. This is a very unexpected behaviour, although of minor consequences. Regards, Martin. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: firefox 67.0.4+build1-0ubuntu0.18.04.1 ProcVersionSignature: Ubuntu 4.15.0-54.58-generic 4.15.18 Uname: Linux 4.15.0-54-generic x86_64 AddonCompatCheckDisabled: False AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.15.0-54-generic. ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC233 Analog [ALC233 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: martin 1585 F.... pulseaudio BuildID: 20190620092152 Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0x90910000 irq 95' Mixer name : 'Realtek ALC233' Components : 'HDA:10ec0235,17aa3825,00100002 HDA:80862882,80860101,00100000' Controls : 33 Simple ctrls : 14 Channel: Unavailable CurrentDesktop: LXDE Date: Thu Jul 4 23:24:35 2019 Extensions: extensions.sqlite corrupt or missing ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) InstallationDate: Installed on 2016-12-05 (941 days ago) InstallationMedia: Lubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1) IpRoute: default via 192.168.1.1 dev wlp4s0 proto dhcp metric 600 192.168.1.0/24 dev wlp4s0 proto kernel scope link src 192.168.1.3 metric 600 Locales: extensions.sqlite corrupt or missing MostRecentCrashID: bp-7e1f310f-034d-4a7b-b742-54df41180319 Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:1151 PrefSources: prefs.js Profiles: Profile0 (Default) - LastVersion=67.0.4/20190620092152 (In use) RunningIncompatibleAddons: False SourcePackage: firefox SubmittedCrashIDs: bp-7e1f310f-034d-4a7b-b742-54df41180319 bp-daebd85b-34c2-4ab9-88ea-1fc091180208 bp-dd2282e2-f0cb-47f7-a13a-a16c20180102 Themes: extensions.sqlite corrupt or missing UpgradeStatus: Upgraded to bionic on 2018-08-29 (309 days ago) dmi.bios.date: 01/12/2016 dmi.bios.vendor: LENOVO dmi.bios.version: CCCN19WW(V2.05) dmi.board.asset.tag: NO Asset Tag dmi.board.name: Lenovo B50-10 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40700 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo B50-10 dmi.modalias: dmi:bvnLENOVO:bvrCCCN19WW(V2.05):bd01/12/2016:svnLENOVO:pn80QR:pvrLenovoB50-10:rvnLENOVO:rnLenovoB50-10:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoB50-10: dmi.product.family: IDEAPAD dmi.product.name: 80QR dmi.product.version: Lenovo B50-10 dmi.sys.vendor: LENOVO ** Affects: firefox (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic ** Attachment added: "Screenshot" https://bugs.launchpad.net/bugs/1835467/+attachment/5275123/+files/2019-07-04-233039_1366x768_scrot.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1835467 Title: Loop through search occurrences in a wegpage misses one item. Status in firefox package in Ubuntu: New Bug description: Hi, This is probably the most unexpected bug that I have ever seen. Fortunately, it is benign. How to reproduce: - Go to the webpage https://www.w3schools.com/howto/howto_js_autocomplete.asp - Type Ctrl+f to look for a work through the webpage. - Search for addEventListener. Firefox successfully found 4 occurrences on the webpage. - Using the arrows next to the search box, loop through all occurrences. Firefox then loops for the following occurrences: 1 inp.addEventListener("input", function(e) { 2 b.addEventListener("click", function(e) { 3 inp.addEventListener("keydown", function(e) { (although it is hidden by the message about cookies) 4 document.addEventListener("click", function (e) { 5 Loops back to the first occurrence inp.addEventListener("input", function(e) { 6 Again the second occurrence: b.addEventListener("click", function(e) { 7 Directly to the fourth occurrence, missing the third one: document.addEventListener("click", function (e) { 8 (goes back to 5). In other words, although the first cycle through all occurrences was correct, the following cycles misses the third occurrence! I have restarted Firefox and still gets this behaviour. If instead of clicking on the “down” arrow to look for the second occurrence, then it is “b.addEventListener("click", function(e) {” which is missing from the loop: it seems that whenever cycling through all occurrences of a search in a webpage, if there is only four occurrences, then the third one is never reached except in the first cycle. I am sending a screenshot of the situation. This is a very unexpected behaviour, although of minor consequences. Regards, Martin. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: firefox 67.0.4+build1-0ubuntu0.18.04.1 ProcVersionSignature: Ubuntu 4.15.0-54.58-generic 4.15.18 Uname: Linux 4.15.0-54-generic x86_64 AddonCompatCheckDisabled: False AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.15.0-54-generic. ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC233 Analog [ALC233 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: martin 1585 F.... pulseaudio BuildID: 20190620092152 Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0x90910000 irq 95' Mixer name : 'Realtek ALC233' Components : 'HDA:10ec0235,17aa3825,00100002 HDA:80862882,80860101,00100000' Controls : 33 Simple ctrls : 14 Channel: Unavailable CurrentDesktop: LXDE Date: Thu Jul 4 23:24:35 2019 Extensions: extensions.sqlite corrupt or missing ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) InstallationDate: Installed on 2016-12-05 (941 days ago) InstallationMedia: Lubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1) IpRoute: default via 192.168.1.1 dev wlp4s0 proto dhcp metric 600 192.168.1.0/24 dev wlp4s0 proto kernel scope link src 192.168.1.3 metric 600 Locales: extensions.sqlite corrupt or missing MostRecentCrashID: bp-7e1f310f-034d-4a7b-b742-54df41180319 Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:1151 PrefSources: prefs.js Profiles: Profile0 (Default) - LastVersion=67.0.4/20190620092152 (In use) RunningIncompatibleAddons: False SourcePackage: firefox SubmittedCrashIDs: bp-7e1f310f-034d-4a7b-b742-54df41180319 bp-daebd85b-34c2-4ab9-88ea-1fc091180208 bp-dd2282e2-f0cb-47f7-a13a-a16c20180102 Themes: extensions.sqlite corrupt or missing UpgradeStatus: Upgraded to bionic on 2018-08-29 (309 days ago) dmi.bios.date: 01/12/2016 dmi.bios.vendor: LENOVO dmi.bios.version: CCCN19WW(V2.05) dmi.board.asset.tag: NO Asset Tag dmi.board.name: Lenovo B50-10 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40700 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo B50-10 dmi.modalias: dmi:bvnLENOVO:bvrCCCN19WW(V2.05):bd01/12/2016:svnLENOVO:pn80QR:pvrLenovoB50-10:rvnLENOVO:rnLenovoB50-10:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoB50-10: dmi.product.family: IDEAPAD dmi.product.name: 80QR dmi.product.version: Lenovo B50-10 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1835467/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
