the latest version of Toolset Blocks is causing conflict with editors in other plugins, such as for example my newsletter plugin Fluent CRM. The moment I update, the Block Editor in Fluent CRM throws an error saying "This block has encountered an error and cannot be previewed." - this applies to pretty much all standard content blocks, whether paragraph, image or headline.
If I go back to 1.6.17, it works fine.
I tested the conflict with a brand new install just with Toolset & Fluent CRM to ensure that there's no other issue and could replicate the issue.
I just used your sandbox and indeed, if you just activate Blocks on a fresh install, the issue does not appear. I now activated also Toolset Maps, Forms and Access and now the issue is also visible in the Sandbox environment . Simply go in Fluent CRM to Email Templates and then create a new one - once you click in the editor to edit the text or add another block element, the error will show, as you can see in my screenshot as well.
Ok I can see the issue when Toolset form's plugin is active.
We do not have any official integration with "FluentCRM - Marketing Automation For WordPress" plugin and I do see few JS errors on browser's console when I try to create new email template from the FluentCRM.
Can you please get in touch with FluentCRM support and check with them and ensure they are loading all the scripts at right time and if they confirm I'm happy to escalate this in front of our next level support.
the JS errors are caused by Toolset. If I just run FluentCRM I don't have any errors! You can test it in your sandbox simply by deactivating Toolset.
I run more than 100 plugins on my side and none is causing the issue. The moment I activate Toolset, the errors appear. So the issue is not with their plugin but with yours, because FluentCRM is not conflicting with any other plugin.
Please escalate this to the next level of support so this can be investigated.