The tours on https://www.wikidata.org/wiki/Wikidata:Tours don't work anymore. There is nothing showing up after selecting the arrow in the first window. The JavaScript console is showing the following:
TypeError: Attempted to assign to readonly property.
The problem is related to overlays. I removed the overlays from the tours, now they are working again for the time being, but with a worse graphics.
Thanks for identifying the issue, whilst disabling the overlays has made the Items tutorial work, the Statements tutorial points to some elements further down the page (3rd box) and the page does not jump to that section any more meaning the tutorial appears to break (you have to know where to look for the box to find it).
You not be able to see this fault if you have a high resolution screen
Any ideas how the overlay part could be fixed?
I tried to understand the mentioned issue, but could not reproduce it. The original issue is fixed. If there is something else wrong with the tours, please open a new ticket. Thanks.