Block Plus module problem

Hi,
When I activate the Block Plus module, I have a problem in editing pages.
All blocks containing html freeze (impossible to edit) and the texts of each module appear twice in each block.
They become editable again once the module is deactivated.

Can someone give me some suggestions to solve this problem?
Thanks

Core : v 4.0.0
Block Plus : v 3.4.15.10
Generic : v 3.4.43

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