ฟอรั่มสนับสนุนของ Firefox สำหรับ Android

I am sure someone has asked the question before but couldn't find the answer. Why dark mode has to be different than other dark modes on other apps. Colours really does not match nicely with my phone. I used Samsung Fold and its really unpleasant.

Version 125.2.0, Android 11 Settings: Firefox is default browser. 'Open links in apps' is set to 'Ask before opening'

Scenario:

• With the Swiss payment app 'Twint' I scan a QR-code for a payment
• This will open the embedded browser to show a payment site (sbs.twint.ch)
• After entering the amount and pressing submit, the flow is supposed to return to the Twint-app. However, here it just blocks and I cannot navigate anywhere or return to the app manually

Workaround:

• When the embedded view shows, in its menu, I can select 'Open in Firefox'
• Entering the amount there and pressing submit, the popup shows, asking me whether 'to open the link in app'. When I confirm, I am redirected back to the app and can confirm the payment there.

I suspect, the webview does not show the popup but wait for it to be confirmed and thus the flow is blocked. I have searched the forum but could not find anything matching. Still, is that a known issue?

Firefox is working in background and draining the battery. That what I see in battery usage information. I have tried to limit and stopped Firefox but it is still on the top of battery usage.