2.6.3 Update breaks Gutenberg structure

Replies: 0

Found that on update 2.6.3 Multistep Form negatively affects the structure of Gutenberg blocks.

We have a block container that contains three group blocks, one of which wraps the multi-step form.
After updating to 2.6.3, the third block jumps out of the container, so we rolled back to version 2.6.2 and everything fell into place.
For the container, a Bootstrap container block was used, for the wrappers, standard wordpress groups were used

Structure before update

<div class="wp-bootstrap-blocks-container">
  <div class="wp-bootstrap-blocks-container">...</div>
  <div class="wp-bootstrap-blocks-container">[Multistep Form]</div>
  <div class="wp-bootstrap-blocks-container">...</div>
</div>

Structure after update

<div class="wp-bootstrap-blocks-container">
  <div class="wp-bootstrap-blocks-container">...</div>
  <div class="wp-bootstrap-blocks-container">[Multistep Form]</div>
</div>
<div class="wp-bootstrap-blocks-container">...</div>

Changing the structure of blocks (for example, changing the wrappers from block groups to another) did not help.