When using Compose to create content, if you try to insert a hyperlink in a block near the bottom of the page, a portion of the pop-up to create the hyperlink may be inaccessible.
- Studio | Compose
It is expected that when you go to insert a hyperlink that the entire pop-up to configure the hyperlink will be accessible (see top image), however, sometimes a small portion is hidden (see bottom image) by the navigation bar at the bottom of the campaign creation screen.
There is no known resolution for this issue at the current time. Known Issues Tracker. (Issue ID: CSUP-12, formerly PUB-1754)