Hello all!

New issue (in 22.05 here, but might be anywhere):

https://somedomain.net/cgi-bin/koha/tools/letter.pl?op=delete_confirm&branchcode=&module=suggestions&code=ACCEPTED

When somedomain is onto one of our debian box (bullseye, 11), the branchcode= disappears on landing.  Be it on the connection page or letter.pl, we do not have the branchcode= anymore, and the code throws an error (branchcode being undefined)

When running onto our laptops (Ubuntu) that doesn't happen.

We have no custom RewriteRule, so I'm trying to figure out WHERE this rewrite comes from. 

All suggestions welcomed,

Best regards,