To reproduce this, you need KDE4 vcl plugin. Just running KDE4 desktop is not enough, it might still use Gtk vcl plugin to render UI. If needed, start LibO like this: SAL_USE_VCLPLUGIN=kde4 ./soffice In general, any combo box doesn't bounce back into its original shape after it has been "visited' i.e. keyboard focus has been removed from it or the user clicked elsewhere with the mouse. To demonstrate, 1. Open e.g. empty Writer document, then Format -> Paragraph -> Outline and Numbering tab (but any dialog with multiple combo boxes will do) => now Outline level combo box has keyboard focus 2. Press Tab to move focus to Numbering style combo box, or simply click somewhere else in the dialog => funny rendering artifact appears on the right edge of Outline level combo box (where the dropdown arrow is) See also attached .odg w/ screenshots
Created attachment 116583 [details] .odg file demonstrating the issue
Built with Katarina's build options, on Kubuntu 15.04 64-bit with Plasma 5, the artifacts are a bit different. Mostly seen after visiting the Numbering style - an extra border appears inside the dropdown. Version: 5.1.0.0.alpha1+ Build ID: 40dbc52755a905b4437d861360d3b8069d5b53b1 Locale: en-US (en_US.UTF-8)
Jan-Marek Glogowski committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=57792314c7b05f71c66834ee47bfaa09003df765 tdf#92115 KDE4: better listbox theming It will be available in 5.1.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Jan-Marek Glogowski committed a patch related to this issue. It has been pushed to "libreoffice-5-0": http://cgit.freedesktop.org/libreoffice/core/commit/?id=073936d374ded0e2374b4146ec32cb30149ba35e&h=libreoffice-5-0 tdf#92115 KDE4: better listbox theming It will be available in 5.0.0.3. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
This is very much fixed ..