add ui scaling/vertical labels issue to known issues section

Author: FluffierThanThou

Source/description.md

@@ -11,6 +11,9 @@ Various usability extentions to the 'vanilla' work tab;
  - Various small UX tweaks; scrolling to increase/decrease/toggle priorities, increase/decrease priorities for whole columns/rows (by holding shift and clicking/scrolling while hovering over the column header/pawn name respectively).
  - **All functions are detailed in the tooltips, take a moment to hover over and read them!**
 
+# Known Issues
+With UI scaling turned on, vertical labels are drawn in the wrong position. I've been working on this problem for a while, but have been unable to come up with a solution. Workarounds are to not use UI scaling, or to turn vertical labels off in the mod options. See the [issue](https://steamcommunity.com/linkfilter/?url=https://github.com/FluffierThanThou/WorkTab/issues/77) for more details.
+
 # Notes
 With great power comes great responsibility. The default priorities of tasks within a job is set for a good reason; it's (usually) a sensible default. Changing these can lead to deadlock situations, so change the priorities of individual jobs at your own risk!