!= not working in any text field (was: login to ssh session)

Trying to login to a ssh session with password
xxx!=yyy
produces: see screenshot

Therefore session failed with invalid credentials.

This '!=' is part of my password and not the math meaning for "not equal". ;-)

Reproduce the SSH password login with `xxx!=yyy`, then compare it with a password that does not contain `!=` and with other text fields as described. Trace the text-field or credential-input path that handles these characters. Done means passwords containing `!=` are accepted correctly and the behavior is covered by a regression test.

Written by the indexing model from the issue text.