Need more infos releated to SERVER-53232 about dropDatabase issue

I opened one ticket about ‘dropDatabase can’t acquire global lock’ issue recently and got the reply already.
I was told that this issue has been resolved in MongoDB4.4, but for some reasons we can’t upgrade our 4.0.3 cluster to 4.4 now.
I would like to know more details about this issue, then maybe try to fix it in my 4.0.3 version.
Tried to connect Kelsey but got no reply any more.

Could someone in MongoDB who is familiar with this issue give me some help?
Thanks so much!