Simply put, when attaching a Sequenced Gearshift to a mechanical piston, then operating the piston, any program inside the SG is reset to the default (turn 90) after the mechanical piston comes to a stop

Thanks for the report. Could you share with us a schematic/screenshot of a setup where this issue happens reliably?

Thanks for the report. Could you share with us a schematic/screenshot of a setup where this issue happens reliably?

I found the conditions to reliably recreate the issue as seen in the attached video. You have to move the gearshift with a mechanical piston while it is powered (e.g. lever) AND after it completed it's sequence.

Create v0.3c
Minecraft 1.16.4

Schematic of the contraption: replicate_gearshift_issue.zip

This is a fairly common and frustrating issue in my inventions. Sequenced gearshifts and redstone links resetting after being turned into and out of entity form. Mumbo Jumbo has the same issue 9:21 in the following video: https://www.youtube.com/watch?v=Kt2nx1p2Qgc&t=561s

This issue should be fixed in version 0.3.1c