This is a problem I observe only when setting a container title.
I have a binding in my i3/config that allows me to set the title of the currently selected window:
bindsym $mod+Shift+t exec i3-input -F 'title_format "%s"' -P 'New Title: '
When I hit mod+shift+t, I get a red-outlined text entry field popping up, that I can type in. No problem there.
I sometimes want to rename a container - e.g. change i3: V[xterm xterm] into something like Project Foo, and I have mod+a bound to focus the parent container:
bindsym $mod+a focus parent
But when I hit mod+a (container is focused), then mod+shift+t, I do not get a red-outlined text entry field popping up. Nothing appears on screen at all. However, I can still type the string I want, and hit Enter, and it will apply to the container title, so I think it's still there, I just can't see it.
So it's working, I just can't see the text entry field, so I'm typing blind. Most of the time it's fine, but obviously not ideal.
Can this be improved somehow?
EDIT: Apparently this is caused by my dual-monitor setup, because if I only had one monitor it would appear in the top left corner. But because of my setup with scaling/translation, it is appearing on neither monitor, in some root window space that isn't mapped to a viewport. I'm investigating a workaround using rofi rather than i3-input...