Version 3.1 Build 23 on Windows 10 FCU x64
When I'm editing a JSON document; the left sidebar display - and + as you would expect to expand/collapse regions.
However that functionality completely stops working after the first line of code that contains a syntax erorr (and it red underlined by the syntax helper/checker)
Quite frustrating because I work in a lot of JSON/XML files serve as templates for code generation and they contain a lot of "flexible fields" that are not valid JSON.
If you need more information or anything else like a screenshot just ask.
I'm happy to help
Cheers,
Jarrich
PS Loving the app so far. Quick, easy and straightforward.