Are there any plans to integrate system theme selection into system settings?
Because, well, it is called 'system' theme and it is applied system-wide so I think that is where it does belong to rather than having to use (great almighty) UTTT.

I am aware of the fact that still lots of apps are not (fully) supporting dark mode, but with this setting easier to reach maybe it will help to encourage developers to pay more attention to this.

I red this forum post and Marius's comment listed there (almost at the end). It says that there are plans are to move away from ubuntu location service towards geoclue and qtlocation and hybris platform.

What's the status with that. Is there any progress?

I know what you are talking about, because on my E5 I do/did have this very rarely. It used to be more. Since OTA 6 it is gone together with another nasty bug (screen not unlocking on incoming calls and so on).
Did you/do you change your volume? In the German telegram group someone was describing the same problem (see: https://t.me/UBports_Deutsch/25623). There was the idea that it might be connected to the sound volume. With a volume of approx. 45%-55% it is more likely to have this bug.

To complete the ideas from the Telegram-thread a few days ago I add my draft as well. Although I was already reminded that there used to be a browser "in the old times" using a similar logo.
Teleports - port - steering wheel was the idea behind it...

Edit 1:
In Germany there is a phrase "ein sicherer Hafen" (a safe port). A port suggests safety (for ships).
If that makes sense in other languages a marketing phrase for TELEports (independent of the icon) could be:
<marketing> "TELEports - a safe port for your chats" </marketing>

Edit 2: For legal purposes, the plane is taken from https://commons.wikimedia.org/wiki/Category:Telegram_Messenger#/media/File:Telegram_logo.svg and comes as public domain. No copyright fraud intended.

Great job! I do really appreciate the efforts to not only fix numerous issues but as well design entirely new things!

I do really like the option to be able to easily pick and arrange icons on my home screen (UT Tweak Tools does that at the moment). That's something that would definitely add some value to UT.
-> I would like to see a feature to tap - hold - shuffle around icons.
-> Also I think it would be good, if apps would be either on the homescreen or on the other page. So you don't get them twice.

How about this:
0. the launcher for some apps you would like to reach from every place on your phone (i.e. settings, OpenStore, ?)

1. home screen as in sprint with your most favorite apps for quickest access
2. at the bottom numbered icons that will load separate "app folder pages"
   -> number 1: all other apps that are not assigned to one of the other screens
   -> number 2: custom = maybe games
   -> number 3: custom = maybe social/communication apps
   -> more numbers if the screen allows it
   On my BQ E5 there won't fit more icons unless they are smaller. But 4 will quite likely be possible.

With this layout you can quickly reach lots of apps.
Custom icons/group icons would be a plus to make it more obvious which type of apps you are holding on your pages.