GBPro 2.0 beta: alt tag image in a repeater field (array as return format) bug?

Hi, I’m testing the repeater fields within the query loop with GB Block PRO beta 2 – starting scenario like this one:

https://generate.support/topic/repeater-acf-field/#post-142918

First, I can confirm that with ID as return format, the alt tags aren’t displayed.
I did switch the return format to Array, add the {{post_meta key:image_meta_key.alt}} dynamic tag to the alt text field (–> like indicated here https://app.screencast.com/Tgyxg5oQhVjWO?conversation=wqnVgyTPdput7zfPjF8gDJ) everything works fine … but if the image has no alt-tag set, it won’t be displayed!

A bug, I guess?

I’m testing this locally, so I can’t really provide a URL (I could set up a live link in case), but I guess you can easily reproduce this – or maybe you’re already aware of the bug (I did check on GitHub, found nothing).

Thank you!
Davide