@Adamm argg, you are right. (It’s late).
The changes from 8.5 -> 8.6 introduced a mount bug affecting ALL users rather than expanding functionality to support user compiled firmwares.
@Jack Yaz originally the code logic was one block of (if NOT RMerlin) while the other two blocks were (IF RMerlin)
I copy pasted the new alternate RMerlin detection block three times and this turned all three logic statements into (if NOT RMerlin) which was not intended. I forgot they originally differed.
Pushing another fix...
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Update v8.7 is out
-fix mount bug introduced in v8.6 changes
Apologize for the update roller coaster today. Stuff kept popping up.
Hopefully everything is now settled for a nice calm stretch of time.