Mendeley does not open downloaded files

Just installed mendeley desktop from aur and when I finish downlaoding a pdf to open with it it reports:
QFSFileEngine::open: No file name specified
[0119/] Failed to open file: /memfd:/.glXXXXXX (deleted)
Error: File or directory not found
Im sort of clueless. Also realized en_US locale is missing here. Can it be due to the update?

Try mendeleydesktop-bundled

Same behavior.