Created attachment 148382 [details] Screenshot of broken icons Some icons in vertical docked toolbar are broken. They are displayed with black triangle. Not all icons are affected. The "Drawing" toolbar has a lot of broken icons. I see the error in Version: 6.3.0.0.alpha0+ (x64) Build ID: 86501f577638b44042c35e601d13651992b64fd5 CPU threads: 8; OS: Windows 10.0; UI render: default; VCL: win; Locale: en-US (en_US); UI-Language: en-US Calc: threaded The error is newly introduced. I'm quite sure it was OK two days ago, but I have no longer a build to test it.
*** This bug has been marked as a duplicate of bug 122761 ***