Warp Stabiliser - Canon 1DX Mark II - Heat distortion lines

Hi,

Whenever I apply Warp Stabiliser to a video it makes all of the bold, sharp lines in the footage glitchy, giving a sort of heat distortion affect, but only on the sharp lines. The actual stabilisation of the footage isn't an issue so much as the horrible scanning effect.

Could this be a fault with my camera? I've reinstalled premiere, tried every different setting in Warp Stabiliser, tried using Warp stabiliser on multiple machines, all having the same problem.

https://youtu.be/L_4vi57jrMY - This link shows the same clip, first with the stabiliser and if you look at the edges of the text you can notice the scan line effect. The second clip is the unstabilised version (excuse my awful camerawork it was freezing cold and I hadn't got the ronin out ) But on the second clip you can see that whilst it is shaky the text is sharp. Also the actual stabilised movement in the first clip is pretty much fine, just the lines:(

I've spent the last few hours trying to figure out what is causing this issue to no avail, any help at all would be very much appreciated! I feel like this has to be an issue with my camera settings? For reference I am shooting using a canon 1DX Mark II.

Thanks