Interception Window: Extension Tab is missing

[CheariX]

If you use the *Extension -> EsPrESSO" Tab in the interception tab to view or edit SAML content, and you click on forward (ctrl-f), the next inteception tab will not show up any extensions.

Current work around:
Before you click on "Forward" you have to leave the extension tab by going back to the "RAW" view.
Then it works. If you forget once, you have to restart Burp...

Documentation

Normally, it should look like this:

If the error occurs, the extension tab is missing:

Running in recent Kali Linux with OpenJDK 11.