Video is delayed re-encoded after being ready

Hi there,
yesterday, we experienced an extremely odd behavior on one of our cloudflare stream videos.

The video was uploaded three days ago and was served to end users. Yesterday, customers wrote to out support, that the video no longer has sound.

While investigating the issue, we noticed the video was in the encoding step again.

Should we prepare for videos to (as far as I can tell randomly) become unavailable?

On a different note: Videos without sound are processed very fast. Videos with sound take about 2 to 3 times the video length for encoding. Tests suggest that this is not an isolated incident.

We already opened a Ticket with Cloudflare.