Thumbnails auto re-sizing when description added

Hello, and thank you for the plugin; I’m using the Pro version.

I’m wondering how to prevent thumbnails from being automatically re-sized when I include a description in the “Product” field.

My table shows the “Thumbnails” column first (and they’re set to 100px on the Configuration tab), and the “Products” column next. If the Products column includes only the product name, the thumbnail seems to be sized properly.

But when I either uncheck “Disable description” to include the main description, OR check “Description” to include it as an “inner item” (which I want because it’s sourced from a different description field in the product record), the thumbnail size is reduced in reverse proportion to the amount of text in the description. In other words, the more/bigger text there is, the smaller the thumbnail gets. If the row size doubles or triples in height, the thumbnail becomes tiny.

I’ve tried many combinations, including custom independent thumbnail and description columns, etc. all with the same result.

I hope that all makes sense.
Thanks for your time helping resolve this.
Regards,
Mike