I'm learning Flux.ai, and I've run into something that makes no sense. I started this simple project:

https://www.flux.ai/jamesnewton/light-controlled-motor?editor=pcb_2d

and I followed these directions:

https://docs.flux.ai/reference/silkscreen-reference#modifying-existing-silkscreen

to move the "J2" designator to a new location and orientation. But when I try to move "J1" in the same way, it always just pops back to the original location.

See also the discussion by others here, where it's assumed to be a bug.