Cannot mount anything in a particular local directory using sshfs

[twoai]

I can't sshfs mount anything on a particular local folder: /media/bki5_ro

I can sshfs mount fine as long as the local folder is not /media/bki5_ro. For example, /media/bki5_roo would work fine.

The offending command is: sshfs hs556@192.168.32.171:/home/hs556 /media/bki5_ro -o idmap=user -o reconnect

This is essentially the same issue as reported here.

rm -rf /media/bki5_ro and recreating that folder doesn't help.

By the way:
$ ls -ltd /media/bki5_ro
drwx------ 2 hs556 hs556 4096 Jan 18 08:39 /media/bki5_ro

This issue is probably very difficult to reproduce. I can't imagine sshfs just doesn't like a particular folder. Luckily this issue now consistently exists on my system. I can collaborate with anyone who wants to give it a shot resolving this bug. Just let me know what you want me to do on my system and what results you want to check.

Thank you in advance.