Created attachment 152114 [details] Screenshot of icons for Base-files with thick black border Open LO. In the startcenter you will see preview for files you opened before. Open a database-file and close it. Now have a look at the icon. It will get thick black borders on some systems since LO 6.3.0.0.beta1 Tested with Version: 6.3.0.0.beta1 Build-ID: a187af327633f5f00363be5131bd21a13e0f1a7b CPU-Threads: 6; BS: Linux 4.12; UI-Render: Standard; VCL: gtk3; Gebietsschema: de-DE (de_DE.UTF-8); UI-Sprache: de-DE Calc: threaded on OpenSUSE 15 64bit rpm Linux.
Which icon theme do you use
(In reply to andreas_k from comment #1) > Which icon theme do you use I have tested with the automatic (Elementary), Breeze, Colibre, Sifr and Tango - every theme has a tick black border. If the icons isn't square the border isn't same width left/right and above/bottom. Could be it has something to do with gtk3.
*** This bug has been marked as a duplicate of bug 125461 ***