UI bug: panel widths shrinking

[Raven]

I have many panels visible, undocked and not iconified. They are on a second screen although the issue still exists if they are on the main screen.
Most have been widened beyond their minimums because otherwise the buttons at the bottom don't all fit.

Every time one of these panels is closed/opened or moved, or if the document is opened or closed, they shrink in width by a few pixels.
Before long they are back to their minimum widths.

It happens even with the default workspace and settings.
MacOS 10.12.6

[VectorStyler]

@Raven I will try to replicate this.

[VectorStyler]

@Raven I could not replicate this. I tried it on Macos 10.12 (Sierra) with a retina display (iMac 27")