Linux: Freezing when adding projects

[makeasnek]

Describe the bug

1. Install BOINC from flatpak or apt
2. Try to add a project manually, but put in an invalid password
3. BOINC freezes. If you wait minutes it will sometimes unfreeze, with the project not added.

I do not have an exact sequence of: OS version, BOINC version, etc to accurately reproduce this, but given that I've seen it on a number of Ubuntu & Mint variants from different packages (flatpak and apt), I think it's worth noting here. Not a high priority bug, just wanted to write it down somewhere in case others are experiencing it and can give better diagnostic details. Just had this happen yesterday with the latest flatpak.

I am pretty sure I have seen this in older versions even with the correct password, but can't say for 100% sure.