So, I made a video demonstrating this, but the video is a tiny bit too large for bugzilla. There was a message in the main fedora channel that, if you reply to it, the whole interface partially just freezes. I say partially because you can still close the program, but most of the UI is extremely lagged. Looking at the system logs, this gets spit out in a loop: Jan 15 06:46:39 steve-desktop neochat[8386]: qrc:/qt/qml/org/kde/neochat/chatbar/ChatBar.qml:415:13: QML ReplyComponent: possible QQuickItem::polish() loop Jan 15 06:46:39 steve-desktop neochat[8386]: qrc:/qt/qml/org/kde/neochat/chatbar/ChatBar.qml:415:13: QML ReplyComponent: ReplyComponent called polish() inside updatePolish() of ReplyComponent If you want to test it yourself, this is the message link: https://matrix.to/#/!IhcqhWlYjCdpSVAiae:fedoraproject.org/$lBjuUFtUBOI7iVxozOxFfpK1KX0ExO6pY58I4YXuGlo But yeah I'm guessing this error is caused by what is in that message, if that makes sense.
Someone else ran into the same issue, should be fixed in https://invent.kde.org/network/neochat/-/merge_requests/2620 on git master. I will plan on cherry-picking it to stable too.