🐛 Bug Fix
- Backspace: pressing Backspace at the start of a styled inline run (e.g.
<em><strong><u>…</u></strong></em>) that was preceded by a<br>deleted the entire run instead of just the line break.checkJoinNeighborswalked up to the inline element and tried to merge its content into the preceding<br>(a void element), which removed the whole element. It now removes the<br>as a single unit. Fixes #1282.