'Create Issue' title input on Epic page trims text unexpectedly on change.

Editing text in the 'Create Issue' form on the epic page behaves unexpectedly by automatically deleting trailing white space when removing text.

• Go to an Epic.
• Click Add -> Add a new issue under 'Child Issues and Epics'
• Type a sentence with spaces in the Title input.
• Delete the last word.
• When the first character of the last word is deleted, the preceding white space is also deleted in the same keystroke.

We probably only want to trim on submit, rather than on change.