Comment 7 for bug 1823165

I have the same issue. Happened to me twice within the last two days.

I'm pretty sure that the switch to bold happened at some unknown point while working on the layout. The first time I thought that I may have accidentally hit a hot-key. But the 2nd time I only had the layout open and when I closed the layout editor the schematic was open with all the text in bold. Maybe related to the Update PCB from Schematic feature?

I'm using the official (5.1.0)-1 release build for Windows 64 bit.

Attached the project where I encountered the issue (after the correction back to normal font weight)