Some description texts in configuration forms contain links to a different part of the site or an external site. Currently, the links open in the same tab/window.
The user might lose changes by navigating away from the configuration form in the same tab/window.
Although WCAG states that "Opening new windows and tabs from a link only when necessary", an exception exist that "Opening a page containing context-sensitive information, such as help instructions [...] will significantly disrupt a multi-step workflow, such as filling in and submitting a form, if the page is opened in the same window or tab."
Steps to reproduce
Edit, for example, a select element.
Make some changes without clicking the save button.
Under "Element options Options", click on the "predefined options" link.
Click the back button. The unsaved changes are now lost.
Proposed resolution
Open help links in a new window.
Notes
This issue was brought up during a user research session of the site I'm working on.