Duplicate responses on characteristic monitor (Android)

[ThomasBurgess2000]

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Question

I am starting a subscription of a certain characteristic like this:

const subscription = this.txCharacteristic.monitor(async (error, char) => {

And I remove the subscription whenever the device disconnects.

It works on iOS and Android, but on Android, whenever the device reconnects it starts getting duplicate messages on the listener. Every time it reconnects, there is another duplicate message. For example, I have a command that returns the battery level of the BLE device. The first time it connects, I only read one response to that message. But on the 5th reconnect, I get 5 duplicate responses.

I've debugged everything I can and am pretty confident at this point that there's no leftover listener or subscription in the React Native side of things. Also, if there was, it would presumably affect iOS as well, and I'm only seeing this behavior on Android.

Is it possible there's something wrong with the Android native side of things that's causing it to not properly remove subscriptions? Like maybe there really is only one listener at any given time in the React Native side, but in the native Android code there's still multiple that get forwarded to that one listener. Not sure how that binding happens.

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