'#' gets inserted to editor when switching between FEP number mode and letter mode

1. Launch wiggly from fluidlauncher
2. Clear the text from editor
3. Long press '#' to switch to number mode, ensure you are in number mode by pressing some numbers
4. Long press '#' to switch back to letter mode. Note '#' gets added to editor, and mode will get changed (Can be ensured by pressing keys again).

I think '#' should not get added when mode is changed as an result of long press.