Not all text editing modes rename both tags

[MartinMuzatko]

selecting a single character with shift+arrow keys does not work.
However, if I select the entire tagname and then type a new one, it works.

Multicursor edits also do not work:

[dsandstrom]

This package is currently disabled for multiple cursors.

[McVenco]

I've encountered the first mentioned problem as well. It seems that using numbers in html tags (like in h1-h6) gives some issues. f.i. when I change a h1 to h2 it works okay, but when I undo the change, then it only reverts the change on the tag that was actually changed, and not the other one.