Good afternoon, list, I'm running an up-to-date Stretch operating system on a ca. 2010 Intel laptop chipset. I noticed last night that the toolbars and menus aren't rendering correctly. I dumped a PNG here: http://paste.debian.net/785668 (good for 3 days). If you can't load the photo (because it's converted into plain text), the problem is that the taskbar background shows artefacts from other windows. The menus don't show artefacts but there is a delay in rendering them and the highlight as I move my cursor over the entries.
This is the only information from .xsession_errors: kdeinit5: PID 14789 terminated. kdeinit5: Got EXT_EXEC '/usr/bin/libreoffice' from launcher. kdeinit5: preparing to launch '/usr/bin/libreoffice' QXcbConnection: XCB error: 3 (BadWindow), sequence: 58757, resource id: 125829120, major code: 18 (ChangeProperty), minor code: 0 QXcbConnection: XCB error: 3 (BadWindow), sequence: 58762, resource id: 125829121, major code: 18 (ChangeProperty), minor code: 0 no winId: probably startup task Creating the cache for: "/home/borden/business/clients/AikidoTendokai/Report.odt" Already in database? true First update : QDateTime(2016-07-27 02:37:53.000 EDT Qt::TimeSpec(LocalTime)) Last update : QDateTime(2016-07-27 17:06:40.000 EDT Qt::TimeSpec(LocalTime)) After the adjustment Current score : 7 First update : QDateTime(2016-07-27 02:37:53.000 EDT Qt::TimeSpec(LocalTime)) Last update : QDateTime(2016-07-27 17:06:40.000 EDT Qt::TimeSpec(LocalTime)) Interval length is 0 New score : 8 KActivitiesStats( 0x51b4640 ) ResultModelPrivate::onResultAdded result added: "/home/me/myfile.odt" score: 8 last: 1469654190 first: 1469601473 no winId: probably startup task QXcbConnection: XCB error: 3 (BadWindow), sequence: 59498, resource id: 125829121, major code: 15 (QueryTree), minor code: 0 QXcbConnection: XCB error: 2 (BadValue), sequence: 48173, resource id: 121634820, major code: 142 (Unknown), minor code: 3 QXcbConnection: XCB error: 2 (BadValue), sequence: 48187, resource id: 115343454, major code: 142 (Unknown), minor code: 3 If it's not clear from this output, my desktop is KDE/Plasma 5. Is this a known issue? I couldn't find any similar reported bugs on the Intertubes. With thanks,