Thanks to forum user Mark93, it appears that in the latest testing channels (5.0.6 & 5.07) samba shares are not accessible and fail in the area related to the recently revamped secrets management. For details of symptoms and troubleshooting refer to the thread:

SMB Shares inaccessible after update to 5.0.6-0

@FroggyFlox has identified a possible fix for this situation here:

Comment 18.

If that is indeed the solve, two questions (and they can be handled in separate issues):

• will other services be affected in a similar manner?
• since that environment variable is used in multiple places now, can the keyring directory path be parameterized, so if in the future design decisions affect its location, it does not have to be adjusted in multiple places?