Same problem for me with Android 10.4 (1109602) on an Xiaomi Redmi Note 7 (MIUI 12.0.2). Clicking on most URLs results in an empty screen with a green "Fertig" (German for "Done") in the upper right corner.
A variant of this I see when clicking on more complex URLs (for example links to Google Drive), which results in a popup "Ungültige URL. Ungültiges Zeichen" (German for "Invalid URL. Invalid character", maybe it does not like the "/edit#gid=0" at the end of the URL?
For me this makes the Android app mostly unusable, since nearly all my notes contain some URLs, which no longer can be opened.