Comment 10 for bug 1912750

I contacted upstream and verified that the bug has been fixed on Samba 4.15.

There fix consists of several patches and now we have to evaluate whether it makes sense to backport everything to Focal.

FWIW, these are the commits that apparently fix the issue (I haven't tested them myself):

05d70f92b633284044d1cd14314eadb3645c1e09
88b3d3443b3a581ec301430346b3e9bf05d81b5e
609ca657652862fd9c81fd11f818efb74f72ff55
0730b936d7a8f55389873d72cb0996ab941f15d7
e656d8b1ad4c70a7c85a66945d7c7d807fce9b6c
de28d915d7f135c43c35cf2b5167f9603e99b1f6