There are probably some limits to how clever the software can be in regards to edits made on lines in a pattern.
My understanding is that all lines in Inventor have some hidden ID, and that ID changes as you change the line, so I can see the limits there are propagating that through patterns.
If you uncheck associative you can perform edits after, but of course that also breaks the patterning function
_______________________________________________________________________________________
Intel Core i9-14900KF
64 GB DDR5 6000 MHz
2TB WD_BLACK
RTX A4000
------------------------------
Inventor 2024 Professional