Hi there,
This is due to a conflict with our Easylist protection, we will fix it on our side.

In the meantime, you can toggle Easylist on/off on Tumblr, by:
1. Navigating to Tumblr
2. Click on the Browser Guard icon in your browser's toolbar.
3. In the list of trackers blocked, you will see "Easylist".
4. Click on the "..." next to it.
5. Click "Allow on this website"

For more articles, and to get the most out of Browser Guard, please visit support.malwarebytes.com.