Just start messing with the shop creator.
I gave one of the pages a different name... instead of category I decided to call it "What's available".
Bad move it seems... every time I save a change the application adds in some semi-colons after the apostrophe. I actually got to a line-up of 5 of them before I realised the first time.
See the screenshot where there are just a couple (too many!)

Any help on this?

Hi Janys
I made a shop to test your issue and the "What's animals", the page title i made showed correctly without any semicolons. I made only the preview mode, not at remote.
Try to change theme and check if the problem maintains.
Regards

Making the shop the first time, I had no problems either. It was only when I made further additions (products etc) to the shop and then saved again (and again) that this error occurred.

Thanks for trying it out for me. Maybe Scott or someone has some thoughts on this.

Well, isn't that special...