Craft 3.6.7 (specifically commit https://github.com/craftcms/cms/commit/b06379eb026a095a099792a5f60f85f9655d9efd) moves some code into Craft.initUiElements() which selects links and adds target/rel attributes to outbound links to open them in a new window. However, it selects all links on the page, not just those in the $container passed to Craft.initUiElements(). This can cause unwanted side-effects when the Craft control panel is on a separate subdomain to the front-end, particularly regarding plugins which make use of Craft.initUiElements() and Redactor fields with a link to an entry. For example, the attributes can potentially get added to all such links on an element edit page on page load if the field layout contains a Neo field (originally reported at spicywebau/craft-neo#433), or when adding a new row to a Super Table field.
Craft.initUiElements('footer') on an entry edit page with a Redactor field, containing a link to another entry that is not set to open in a new tabtarget and rel attributes have been added to the linkThank for reporting that! Fixed for the next release.
Craft 3.6.11 is out now with that fix.
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Craft 3.6.11 is out now with that fix.