"Send PM" button on post / profile not working

When trying to send PM to a user by clicking on "Send pm" in forum post or in profile.
Link redirect to correct url
private.php?action=send&uid=1

But uid is "undefined" in the new conversation recipient.
This error is also happening on mybboost.

Oops my bad, it is working anyway (but I thought the first time sending the message wasn't working o.O)

This is a noted bug that Shade said will be fixed in the next Beta...I noticed the same thing on my forum when I tested it.

This should be actually working in beta 2 as long as select2's option "multiple" is set to true; it's not here due to styling reasons. A definitive fix (which implies "multiple" to be always true) will be carried out in beta 3 which will support multiple participants in a single chat.

This should be actually working in beta 2 as long as select2's option "multiple" is set to true; it's not here due to styling reasons. A definitive fix (which implies "multiple" to be always true) will be carried out in beta 3 which will support multiple participants in a single chat.

Shade (4 Nov 2019)

Any ETA for Beta 3?
Also on this, when you click Send PM on profiles/posts it should take you to an existing conversation if you indeed have one? Maybe this would be too complicated but it's just a suggestion instead of giving people the new conversation screen over and over.

There is no ETA, as university commitments are quite unpredictable. Till end of February all development is halted, then I will see what I can do.