Im working on a software development team. We are a small team and our tech lead has told us she is interviewing to move to another team.
The tech lead usually works alone and pretty much much built everything by herself and nobody else really understands how it works.
I expected my manager to put her into consultant/knowledge transfer mode but he's still allowing her to go off and build things unilaterally. I'm concerned that the team is not ready to support our products without this person and my manager doesn't seem to recognise this.
Should I tell him my concerns? I'm also considering interviewing to leave the team because I don't think it's fair to expect me to support these products without any handover or documentation.
Edit: I report to my manager, not the tech lead