WebApp prototype players do not work correctly in contrast to the MacApp:
Working correctly in the MacApp:
Totally broken in the WebApp (Wrong area of the colour gradient, shifted overlays):
Are there any known bugs according to this?
The error already occurred from Sketch 100.3, and now also from Sketch 101.
Hi Christian,
We’re looking into another report that seems to be the same as this case. Is it possible that you share the document link (and activate Support Access) to our support email so we can take a closer look? productsupport@sketch.com
Many thanks 
E-Mail is on its way. 
Interestingly I noticed the opposite thing by stumbling across a problem with the mac app. The webapp prototype player manages hotspots exactly as they are, the mac app switches between clickable areas and non-clickable areas, although the hotspot is applied on the whole element.
Web App
Mac App
Thanks for sharing this! If possible, can you share with us the link of the affected document (and activate Support Access)? You can share it to productsupport@sketch.com
Or if you prefer, a sample document that contains the artborads/layers shown in the video, so we can try to reproduce this on our side.
Mail sent. 
Thank you. 