Export RDTB json, weird format error ?

[Sébastien LAURENT]

Hey all,

I have a mobile gaming app that is using a RTDB to save user data.

I regularly export my RDTB json to perform some analysis. 

Everything was fine until this week.

I use lists at several occasion in my data which are formatted this way in my json:

"List":[{element1},{element2},...],

However, since a few days ago, I noticed several weird behaviors when exporting my database:

1) This format is not respected at some random places in my databases, and they take the following format : 

"List":{"0":{element1},"1":{element2},...}

2) The format seems to change when I export the full database or just a part of it.

3) Sometimes not all elements of the list are exported, some elements were missing. (when I check directly on the console I see more elements that what I see on the exported json)

There was no update of my app using this RTDB since early august.

My RTDB size has grown quite a lot this month and is now close to the 256 MB limit for a one request exporting.

My questions: 

Any explanations on why this is happening ? Is this expected ? Do I have to worry about data being corrupted ? Do I have to worry about my users being affected by these weird behaviors ?

Thanks for your help, 

Sébastien