Siteground Optimizers appears to break certain pages.

I have had issues with Siteground optimizer breaking certain pages on my website.

I am planning to rely on Siteground optimisation capabilities for my commerce site long-term.

I have since deactivated the plugin during my debugging of this issue (which is how I discovered that the SG Optimiser plugin was responsible) so the problem is no longer visible but I can describe it as some sort of awful formatting error wherein the menu and header is thrown all over the top of the main page.

The strange problem is that only certain pages seem to be affected.

Has anyone else had similar issues? I would really like to use the SG Optimiser plugin, as SG is now effectively my long-term home.