Left headphone channel dropping out

On my new unit I noticed that during playback, the heaphones left channel occasionally and randomly drops out.

I’m pretty sure that it’s not the headphone, plug or cable causing this. Rebooting and reloading the project does not resolve it.

I did not try loading a different project when it occurs so far.

Putting up the gain of a random sample up loud and down again seems to make the left channel “pop” open in most of the times.

What could be causing this? Anyone else had this issue? I just hope it’s not a hardware problem, something with the outs…

Edit: this seems to be about the same issue: Headphone out shutdown

Funny mines doing the same , left is clearly quieter and it distorts , tried several pairs of headphones , different ratings with new projects , different adapters.
Left has lots distortion like the connectors not right.
Units only a couple of months old, never really used the headphones till now when I’ve got my studio unplugged.
Anybody else got this ?

First is the right , then I plug in the left via a trs to ts split cable into an audio interface, the first volume is from the right , then the left channel, much quieter . I then boost it without clipping from the audio interface to show the distorted left channel bringing it up to volume as the original right.

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