Display unlocks frequently without interaction

Sure thing, good idea!

 > console.log(Bangle.getOptions()) 
{ "hrmPollInterval": 40, "hrmSportMode": -1, "hrmGreenAdjust": true, "hrmWearDetect": true,  
    "hrmPushEnv": false, "seaLevelPressure": 1013.25,
    "gestureStartThresh": 640000, "gestureEndThresh": 4000000,
    "gestureInactiveCount": 4,   "gestureMinLength": 10,
    "stepCounterThresholdLow": 536888040, "stepCounterThresholdHigh":
    537068368, "twistThreshold": 4096, "twistTimeout": 1000,  
    "twistMaxY": -800, "wakeOnBTN1": true, "wakeOnBTN2": true,
    "wakeOnBTN3": true, "wakeOnFaceUp": false,   "wakeOnTouch": false,
    "wakeOnTwist": false, "powerSave": true, "lockTimeout": 10000,
    "lcdPowerTimeout": 0,   "backlightTimeout": 10000, "btnLoadTimeout":
    1500, "touchX1": 0, "touchY1": 0, "touchX2": 160,   "touchY2": 160 }
    =undefined

How are you trying to update? Phone or computer? Official app loader, development app loader or personal app loader fork?

I used the official App-Loader and Android (Gadgetbridge and Chrome).
Now I tried it with Linux and it worked.

With Version 2v19.53 it still wakes up randomly, although I am not sure of the connection with HR-Measurement anymore. I need more time to observe this again after the update to tell.