bug
double click on a word in an unformatted paragraph (i.e. made of just one text node) and apply some formatting. then deselect and select it again. even if the browser shows the word as selected, slate has selected the whole paragraph. you can see it because the next style is applied to the whole line and not just the word. on Chrome it seems to work correctly.

Slate: 0.55.2
Browser: Firefox
OS: Mac
slate should select the word, not the whole paragraph
Just discovered this issue myself. In Firefox, anchor and cursor do not always return the path of the inner node when double clicking. Instead the paths seems to bleed into the previous/next node, What I've found is sometimes the selection works properly with manual drag.
@sirgru yes, that should be fixed by #3374
Most helpful comment
@sirgru yes, that should be fixed by #3374