Created attachment 101426 [details]
Screenshot showing one missing icon. There are more if you scroll down the dialog.
When customizing the toolbar I sometimes add actions to a toolbar which have no own icon. It is possible to assign an icon to them using the "Change -> Exchange icon" action in the Customization dialog. Now the "Exchange icon" dialog comes up
The "Exchange icon" dialog shows a lot of icons, but it also shows a few texts where obviously the icon is missing. Since I see no point in choosing a text for an icon I deduct this to be a bug.
Operating System: Windows 7
Version: 188.8.131.52 rc
Thank you for submitting the bug. I can confirm that the bug is available in master on Linux.
Created attachment 109141 [details]
Build ID: d59b9b4af36148e4d8df8f3e3492116d378642e2
TinderBox: Linux-rpm_deb-x86@45-TDF, Branch:master, Time: 2014-11-06_00:36:43
Maxim Monastirsky committed a patch related to this issue.
It has been pushed to "master":
fdo#80280 Don't add items with no bitmaps
It will be available in 4.4.0.
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:
Affected users are encouraged to test the fix and report feedback.