Hi,
I have the the same problem – the thumbnail size of the product image on the sidebar widget became extremely large after last update 🙁
I have cleared the Cache several times but the product Images are still too large…
The Problem only occures when while using the MS Internet Explorer … on Chrome, Firefox and on Mobile everything seems to be OK…?
Do you have any Solutions for me?
I do not want to deactivate the Thumbnails on the widget…
Many thanks, Leszek