problem

The words send to or coming from the spellchecker are split up at track changes boundaries what is wrong.See screenshot.

It is unclear if the whole word or just a part of the word is send to the spellchecker, or if the error is only on the mark-up part of the spellchecker results.

solution

TrackChanges uses invisible placeholders for INS-Tags; these are being removed now:
 
 

next problem (see also https://jira.translate5.net/browse/TRANSLATE-1601):

Replacing might result in TrackChange-Tags such as these (= what is marked as deleted is exactly what it has been replaced with; according to our algorithms this is correct - the double 's' was inserted by the same user who's applying the replacement now and the 's' gets removed):