Hello,
With org-mode 9.1.9, my tables sometimes become misaligned when I press TAB and the cursor is in a cell with a link.
In an org-mode buffer, enter:
| aa | aa |
| [[a][a]] | |
The lower-left cell becomes misaligned when I press TAB and the cursor is on the link "a".
I get no misalignment with org-mode 8.2.10.
emacs-version: GNU Emacs 25.3.2 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9) of 2017-09-12
Regards,
Thomas