Firefox - Json output adding in its own grouping - how to remove

[kiddac]

When viewing a json url link that has large content. Firefox preview is adding in its own grouping with a 100 group wrapper for the lists.

For example
[0...99]:
[100...199]:

How do I turn this unrequested feature off and go back to the original output with out this additional grouping being added. I just want to see the real json output.

[midgleyc]

Looks to have been added to fix https://bugzilla.mozilla.org/show_bug.cgi?id=1901215. I can't see a way to switch it off either.