Adding third REST header corrupts data flow

I have a data flow that uses a REST call to retrieve data. I recently decided to add two extra headers (besides the Authorization). The first didn't give any problems and the second initially either, but when I save the DF and reopen it, it breaks. I don't see any regularities, so I assume this is a bug. Below the code for the header added first (that works properly) and then when I add an extra header and save the DF, it breaks when I reopen it.

[firstHeader.txt](https://github.com/Azure/Azure-DataFactory/files/7713946/firstHeader.txt)
[secondHeader.txt](https://github.com/Azure/Azure-DataFactory/files/7713945/secondHeader.txt)

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