Widget blocks are not behaving individualy

problem
when creating new element within a widget block, the settings for individual block elements affect multiple elements.

steps
1. add container to block widget
2. add headline element
3. change bottom margin to 5
4. duplicate headline element
5. change H2 to P and set bottom margin to 5
6. duplicate headline/p element, adjust margin to 25

result
margin on multiple headline elements change.

expected
for the block elements to function individually; for element settings only apply to selected element.

enviro
WP 6.2
GP 3.3.0
GP Premium 2.3.1
GBlocks 1.7.3

thank you!