Hey, I’m facing the same issue but that was creating by a plugin name Ultimate Nofollow. I uninstalled that plugin and Insert/edit link function working fine. Maybe you have a different issue but if you are using that plugin or similar plugin then try it by deactivating it.
Thanks for replying even after reupdate problem not resolved but then I deactivate few of my plugins and found one plugin creating the problem. After deactivating that plugin it works now. Thanks
Thank you both of you for help.
It works…Thanks
BTW is there any other option to make it work with the theme itself (I’m not using child theme)..I don’t want the extra plugin to slow down my site.