I can reproduce it 90% of the times using the attached html file in both Chrome and Firefox (just one pre tag with enough text to show the horizontal scrollbar). In my case, scrolling it to the right and all the way back to the left, so that the mouse pointer is in the panel's area, cause unity panel to fail to reveal.
As I also found out, it doesn't have to be a web browser - text editor like GEdit will result in the same behavior, when a line is long enough to reveal the horizontal scrollbar. ** Attachment added: "Horizontal scrolling causes unity panel to fail to reveal." https://bugs.launchpad.net/ubuntu/+source/unity/+bug/970038/+attachment/4222332/+files/unity_panel_not_revealing.html -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/970038 Title: Launcher do not want to appear Status in Unity: Confirmed Status in “unity” package in Ubuntu: Confirmed Bug description: All time testing new U 12.04 I have the same problem. After enabling the "Auto-hide the Launcher" I have problem to reach that Launcher appears again. I move the pointer lo left, but just the margin of screen gets darker - thats all. I have to repeat moving pointer right - left many times (sometimes 4x, sometimes >> 15x) before I get finally Launcher visible again. To let pointer at border longer don't help. I have Intel's G840 CPU with Sandy HD graphic (if it matters). I hope, it will be corrected before final release. Thanks --kapetr ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: unity 5.8.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13 Uname: Linux 3.2.0-21-generic x86_64 ApportVersion: 2.0-0ubuntu2 Architecture: amd64 CasperVersion: 1.312 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] Date: Sat Mar 31 13:17:50 2012 LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120331) ProcEnviron: TERM=xterm LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/970038/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp