There is currently no way to add custom classes to blocks on a panels page. I had a discussion with Joel about this and ke provided the following info:
So, if you look at the PATCHES.txt file in panels on other sites you can see the patches that were applied... in this case the patch came from drupalwxt so it is not in our composer.json
Enter drupal/panels patch #2849867 description here
Source: https://www.drupal.org/files/issues/2020-04-30/panels_custom_attributes_in_panels_blocks-2849867-78.patch
might be worth getting Liam to add all patches to panels that DrupalWxT add.
OP timer
https://openplus.monday.com/boards/4092908516/pulses/4666686647
This feature support the following requirements
alpha release
Additional context
There is currently no way to add custom classes to blocks on a panels page. I had a discussion with Joel about this and ke provided the following info:
Proposed solution
Definition of done (DoD)