Question about Jabra Evolve2 65 MS

I use this headset professionally and have the following problem: The headset is connected to my docking station via a dongle and to my smartphone via Bluetooth. Every time I receive a call on my smartphone after an MS Teams call, for example, the other person can only hear me extremely quietly for the first 10 seconds. After that, the voice quality is perfect again. The same happens when I have had a phone call and then an MS Teams call comes in. It seems as if the headset somehow readjusts the microphone when the source is changed or something like that. I can always hear the other person perfectly. Does anyone have similar experiences or a tip for me? It's very annoying when customers can't hear you for the first 10 seconds of the call. The firmware is up to date and I have already reset the headset. I have installed the Jabra app on Windows and on my smartphone.