I found one which should be relatively easy to patch:
When switching a snap from a local build(with snap revisions like x1, x2, …) to one of the store distributions, the following broken message is printed:
$ snap info scrcpy
...stripped...
channels:
latest/stable: 3.3.2 2025-09-17 (457) 98MB -
...stripped...
installed: 3.3.2 (x1) 98MB -
$ sudo snap refresh scrcpy --amend
scrcpy 3.3.2 from sisco311 refreshed
Channel for scrcpy is closed; temporarily forwarding to stable.
This line↑