10 camera Multicam Clip not showing up in viewer? :-(

Hi there! After the good response on my YouTube Channel, for multicam comparison, I recorded a clip with 10 action cameras. The idea is to quickly switch between angles to notice quality difference between cameras, do split screens, etc. .
Unfortunately, only a few angles are visible in the viewer, as you can see from the screenshot, while I edit the multicam clip in the timeline. If open the multicam clip directly, I can see all of the angles in the viewer.
Had anybody already encountered this problem?
I didn't until my previous works, where I used up to 6 angles.
A dirt workaround: added 3 fake (empty) angles in the multicam clips (first 3 angles), then I can see all of my angles, but I'm forced to switch to "16 Angles" and the preview becomes quite unusable...
Any experience on how to solve it? Thanks!
Marco

There is no screenshot attached. The angle viewer can display up to 16 angles. Not sure why you’re only seeing 10 with there is video in all the angles.

You'll find the options here (see screen shot).