Bugs in content types

I do not know whether it is a bug with Opigno 2.x (tested up to 2.4) or incompatibility with Drupal 8. Anyway, you can create an audio recorder activity, but it is not diplayed at all. Not even a blank space. Just no frame for this activity.

From what I can see the version of Audio Recorder is 1.0.14.

If I import H5P example, the effect is the same.

Platform: Opigno 2.4 (Drupal 8).

Replication:

I have a number of documentation tool tasks in my course. When I complete one and export the file and then try to open the next task, I cannot seem to input text into the text input fields. Appears to be frozen. Is this a known issue? Are there any solutions?