Hello. Thank you for contacting the Toolset support.
We have such report before and we have internal ticket and we already escalated this issue in front of our Devs. The fix for the issue will be published with near future hotfix release.
This also look the similar - what if you try to add the following custom CSS code to your content template or view's block:
Could you please update ALL Toolset plugins to it's latest officially released version. You can download the latest plugin release from your account's Downloads page:
=> https://toolset.com/account/downloads/