MP4 not linking in v22.5

Running v22.5 beta (build 49 I think).

Opened v22.4 sequence (in a production) + hit render all. 

Watched back + one file is media offline. Hmmm. Bit annoying I wasn't warned/prompted.

Found clip, went to relink, it found file but reported that it wasn't compatible.

This is a screener so it's MP4 plus it has (bracket symbols) in the name.

Converted to prores proxy in shutter encoder + it relinked fine. 

This isn't the only MP4 in the project (lots of A7s C000x.mp4) mind. But there's something about it v22.5 doesn't like that v22.4 was fine with.