so i've been using ubuntu lts and term 1.2.1 for a long time now (since around T6882 was fixed) without any issues and had a change to arch linux and term 1.4.0...
and this time i got a flashback to T6882 since i had to move the window to unblock input after i pasted into terminology.
copy a line of text (still unfrozen) and paste it into terminology and it will freeze until you move the window, switch active window, rightclick (leftclick wont work) the window
noticed a thing if your fast you can type one or two letters after paste before it freezes keybord input
without even looking at the code it feels like the paste command blocks the writing of key inputs,
and that block is unblocked on rightclick/switch (mouse or alt-tab) or move the window.
kernel (lts) 4.19.61
when im back home i'll downgrade terminology package and see where it started or if even 1.2.1 is affected, but that wont be until thursday at an earliest.