crashed shells in all tabs by pasting huge content and closing the tab

By accident I did paste a lot (~80 pages) of content into a terminal tab in Tilix that was not in an editor as I thought. It started to handle all that input and I wanted to abort it.
CTRL+C didn't change anything (as nothing was running, it was all text no commands).
So I closed the tab that was getting all the input.

This got tilix and essentially every VTE terminal stuck.
This is how it looks:

0 1000 1854698 1854697 20 0 1941816 577108 - Rl ? 80:55 | \_ tilix --action=app-new-window
0 1000 1867343 1854698 20 0 50440 42188 poll_s Ss+ pts/3 0:05 | \_ /bin/bash
0 1000 1764144 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 1962053 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3036766 1854698 20 0 50452 42240 poll_s Ss+ pts/6 0:00 | \_ /bin/bash
0 1000 3180194 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3180305 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3434428 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3532625 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3533476 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3534456 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3534954 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 3535210 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 1635392 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 1389820 1854698 20 0 63880 55680 poll_s Ss+ pts/8 0:05 | \_ /bin/bash
0 1000 2077655 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2078150 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2105555 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2107834 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2107997 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2181005 1854698 20 0 50428 42544 do_wai Ss pts/0 0:00 | \_ /bin/bash
0 1000 3712709 2181005 20 0 63044 21284 poll_s S+ pts/0 0:00 | | \_ vim
0 1000 2182293 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2182732 1854698 20 0 0 0 - Z ? 0:00 | \_ [sh] <defunct>
0 1000 2205687 1854698 20 0 50432 43052 poll_s Ss+ pts/10 0:00 | \_ /bin/bash
0 1000 3393623 1854698 20 0 50548 42476 poll_s Ss+ pts/13 0:01 | \_ /bin/bash
0 1000 3531324 1854698 20 0 50548 43044 poll_s Ss+ pts/16 0:00 | \_ /bin/bash
0 1000 3535548 1854698 20 0 50548 42420 poll_s Ss+ pts/18 0:00 | \_ /bin/bash
0 1000 3701275 1854698 20 0 50564 44212 poll_s Ss+ pts/2 0:00 | \_ /bin/bash

Also yakuake (using VTE Terminal as well) is stuck.
Opening new tabs or new instances of tilix does not work either, all are stuck.

Using a different terminal like one using gnome-terminal-server still works, so it really seems to be all VTE users that are affected.