After creating a Highlight the new text selection range is set incorrectly

[okramovic]

Bug, steps to reproduce:

1. add web-highlighter capabilities to the websites (via browser extension)
2. go to https://en.wikipedia.org/wiki/Flavan-3-ol
3. highlight selection that spans multiple textNodes in one paragraph, for example in the first one "sometimes referred to as flavanols) are a subgroup"
4. highlight created is correct. but the new text selection is set wrong, it seems it misses the last textNode when setting new range? (see attached screenshot)