Steps to reproduce:

1. Clean installation of Ibexa DXP.
2. Create new Article.
3. Create anchor inside Body or Intro and save, observe the result (anchor is not editable but id param is there).
4. Create anchor inside Body or Intro inside the table of size 3x3 in any cell (anchor is not editable, id param wasn't saved).

Result:
Anchors are not saved/editable as mentioned in steps 3. and 4.

Expected result:
Anchors should be visible and editable.