Loose Item Character Limit Settings on Page edit in Gutenberg/Blocks

Hello,

when using your Gutenberg-Block in new WP-Editor everything seems fine first. I can add it, I can make all changes to the settings and save it. All seems fine, until load the page again.

When I load the page again, then the settings, for Example for the item “Description Character Limit, are lost when loading the page again.

Steps to reproduce:
– Start a new Page
– Use of your Gutenberg Block in new WP Editor (Block “Feedzy RSS Feeds”)
– Set in “Item Options” the “Description Character Limit” to 300
– Save with “Update” (Publish) Button
– Close Edit Page
– Go again to Edit the Page
– See that all made changes in “Description Character Limit” are lost.