polylang + kadence blocks issue

I have a problem when using kadence blocks and polylang.
When kadence blocks and polylang is active you can only save a page or post 6 times.
After that the admin page hangs. When you check the network tab of chrome devtools,
The post to /wp-admin/post.php?post=1&action=edit&message=4 will stay pending forever.
Chrome allows 6 concurrent connections. So after pressing save the 7th time your browser hangs.

When you click on the /wp-admin/post.php?post=1&action=edit&message=4 request in the
Chrome Devtools network tab, in the “timing” section it says: “CAUTION: request is not finished yet”

This happens in Chrome and Edge. This does not happen in Firefox.

How to reproduce:
1. Install latest wordpress version
2. Install polylang plugin (I added a default language (dutch) and an extra language (english))
At this point the save button when editing a post or page is always active. Saving more than 7 times still works.
3. Install kadence blocks plugin (Gutenberg Blocks with AI by Kadence WP – Page Builder Features)
4. Click “save” on the sample page 7 times.

I have also posted this in the Kadence blocks support forum here.