Missing Waveforms BUG 10.5

Random waveforms have gone missing in my session for no apparent reason at all.

The only way to see the waveforms is to zoom in almost all the way to the 100th of a second.

So far I have tried all of these with no success:

-Resizing the track vertically

-recoloring the track

-disabling and reenabling show waveform in audio preferences

-reloading the session

Could be:

Unfortunately that is not the issue, I always have that slider all the way down.

Screen Shot?
System specs?

Here it is