Feature Request: shift-click in input box should select text rather than move the cursor

[poncha]

When entering text in input box, pressing shift on keyboard and then clicking somewhere inside the content should make a selection of text from the original cursor location to the clicked location.

[ctrlaltca]

We are about to release a new version, please try https://github.com/kvirc/KVIrc/releases/tag/5.2.0-beta1-fix and report if this issue is still present. Thank you