I am running Version: 2.9.9.5 Beta (909024) 64-bit and have found that all of my text, the whole project, is highlighted in the First Revision color (red in this case). I am working in the gray matter dark theme.
The bug or issue started with the Candidate 5 update. The bug persists even if I remove all revisions, save the project and reopen the project. The First Revision color becomes the whole projects text color.
This of course isn’t useful if the author is trying to track changes from revision to revision.