Cursor jumps to start of segment, when user enters space and stops typing for a while

TrackChanges / LanguageTool Issues:

• Cursor jumps to start of the segment, if last entered segment is a space and user stops typing for a moment.
• Also cursor sometimes jumps to start of segment, if you select a word and then use CTRL+V to replace it with something else.
• If you type while languageTool enters its mark-up, the cursor jumps to unexpected positions
• If I take two tags from the source via shortcut directly one after the other, the second tag sits in front of the first, because the cursor after the insertion is probably in front of the tag and not behind it.

• if I then select the first of the two tags via keyboard and then cut it out, the cursor suddenly jumps to the beginning of the segment after the first tag.

• I can reproduce this here: https://review.oneword.de/editor#task/1868/520/edit
• Please see linked TS-issues for more examples.