Same thing is happening for me, but for web worker.
❯ fly scale show
VM Resources for visualizer
VM Size: shared-cpu-1x
VM Memory: 256 MB
Count: web=1 worker=1
Max Per Region: web=0 worker=0
❯ flyctl scale memory 512 --group web
Scaled VM Memory size to 512 MB
CPU Cores: 1
Memory: 512 MB
❯ fly scale show
VM Resources for visualizer
VM Size: shared-cpu-1x
VM Memory: 256 MB
Count: web=1 worker=1
Max Per Region: web=0 worker=0
So it appears not to have been solved?