Array-type props are converted to strings after a drag and drop

[raphaelriehl]

Describe the bug
Array-type props like ['value1', 'value2'] are converted to the string 'value1,value2' when their value is modified via updateBlock and the block is then moved.
They should normally retain the array format.

Here is a video demonstration of the issue:

bug-array.mp4

To Reproduce

1. Change the value of a prop via updateBlock
2. Move this block after another block
3. The array-type prop is now in string format

https://stackblitz.com/edit/github-ppduqkqn?file=Alert.tsx

[raphaelriehl]

Coming back to the news on this bug. Do you think it would be possible to integrate a fix into future releases? Or would it be a lot of work?
Thank you in advance for your help with this issue.

[YousefED]

We probably want to allow more advanced props, and are exploring this here #1724