This is due to a missing code path in the SMB2 client code. Patch to follow.
Created attachment 12380 [details] wip for master.
Created attachment 12399 [details] git-am fix for 4.5.0 Cherry-picked from master.
Comment on attachment 12399 [details] git-am fix for 4.5.0 lgtm.
Assigning to Karolin for inclusion in 4.5.x (IMHO it should not block 4.5.0)
Pushed to autobuild-v4-5-test.
Pushed to v4-5-test.