Title changes to "Auto Draft" when changing value of any custom block field

Hi,

When changing the value of any MB Blocks custom block if the page has not yet been saved, the title gets changed to “Auto Draft” even if we have a custom title entered.

Requirements:
– Need Metabox Plugin activated
– Need Metabox AIO Plugin activated with MB Blocks activated
– Custom block defined for MB Blocks. E.g. Add this to the functions.php:

https://pastebin.com/iNUJ9R6q

Steps to reproduce:
1. Create a new page on the default WP Theme with the custom block code from above
2. In Gutenberg add title to e.g. “My Title”
3. Add a custom block. E.g. “Hero Content” from the demo above
4. Edit any field value of the block settings
5. The page tile automatically changes to “Auto Draft”