I've never seen this before, but for some reason the last 8 layouts in my file always switch to the very last layout. If I click on any other layouts besides the last layout, it switches as expected, but no matter which layouts I put in the last 8 slots it will always switch to the last layout. I attached a screen recording of it to show better what I mean.
Product and version: FMPA 188.8.131.522
OS: Windows 10
Hardware: intel xeon, geforce gtx 460
Description: last 8 layouts always switch to the very last layout when picking from the layout menu in the status toolbar
How to replicate: not sure if it's easy, but for me any layouts I have in the last 8 slots will always do the same thing
Workaround: can switch to the layouts using the layout workspace or using the next record/previous record buttons while in layout mode