If you edit the table layout (column order or width) and then immediately click on a WO the layout will reset.
If you change to a different page, the layout is saved. However if you go back to the WO table and click on any WO 3 times, the layout will reset.
These issues seems to be present on all tables where the description of a selected row opens as an overlay on the right. WO, PM, Parts etc.
The amount of clicks necessary to trigger a reset is different on different pages. WO requires 3 clicks, PM requires 4, and Parts require 8.
Assets open in full screen instead of an overlay and therefore is not affected by this.