I tried the testing steps, but ls -lah /mnt/etc… did not give any output, other than it cannot find the file. Removing vers= did not make a difference either. It is very strange.
I tried a clean install of 2022.09-1, then followed the SMB steps from Mounting network shares with autofs (alternative to fstab). No change.
Then I downgraded to 2022.03-1, followed the same steps, and it works immediately.
2022.03-1 used v5.1.2-4 of autofs, while 2022.09-1 uses 5.1.7-1.