Is the A1 a little unstable on the tabletop? (and fix)

I’ve only had my A1 for a few weeks now and I’m really very happy with it compared to other devices.
There is only one thing that bothers me a little - if I mount a full 1 kg roll on the top-mounted roll holder (I don’t have an AMS), the A1 tends to tilt backwards a little when the printing table moves forwards and backwards quickly.

I also notice this when I push up a little with my hand at the front - it tilts slightly backwards. I can also see this in the print image due to some warping, especially when the print grows a little higher.

So I built myself a stabiliser, which solved the problem for me.
A1 Stabiliser at MakerWorld

Is it just me, or is the slight tilting backwards normal?
Otherwise, I invite everyone with the same problem to try out the stabiliser.