There was a brief thread on this, so I think it is a possibility.
Several years ago I did suffer from acid reflux which was a side affect of Xiphoidalgia which was probably caused due over-exertion when rowing (the thing in a boat not arguing). I have had it a couple of times when eating Huel, but don’t necessarily believe it is Huel itself. My xiphisternum is still sometimes painful, but back then it would make a cracking noise like a golfball being dropped into a plastic cup which people around me could hear too. Took a while to sort itself out. Not much help, but personal anecdotes are fun.
Here is the thread, but not really much use: