IsJustaGhost

Workaround
Requires disabling the "Hands Free AG" Audio device for the current bluetooth device. 

This has been an issue for far too long. No other game or app I have used requires this in order to have audio.

Steps to Reproduce:
1. Connect bluetooth headphones
2. Start Minecraft

Observed Results:
All system audio is gone. If playing Spotify or any other audio, it too will no longer be heard. If audio device is switched to "Hands free" mono, audio is heard. On switching back to stereo, All audio is gone. There is no change when switching windows. It's like the headphones have been disconnected but, they show as they are. 
Switching from Fullscreen to windowed mode or, if in window mode and making the window fullscreen and not, will cause audio to momentarily burst. Maybe a half seconds worth.

Expected Results:
No disruption to the audio device.

Sounds like there may be some corruption in the save. Come over to the Community Support Discord and give me a ping. Since you are on Windows 10 I can help you thru steps that may help get past this issue.
https://discord.gg/58Sxm23

On Windows 10, Make sure you have Connected User Experiences and Telemetry service active and set to Automatic. If it is not running, achievements will not show up.

https://www.askvg.com/fix-xbox-achievements-not-working-in-windows-10/

Try posting your issue at the support discord at  https://discord.gg/58Sxm23

This issue is also present on Windows 10 1903. MC:BE 1.13.1

I have been seeing complaints about this from Members on the Minecraft Discord. I tried it out myself and the same thing happens. 
When selecting a language to open the appropriate form, the selected language does not carry over to the form. 

Since the language is a required field, the user must select it again.  Each time a language is selected, it resets the form.

Windows 10 1903

I just updated to 1.13.0 on Windows 10. Skin selection does not save. If i change my skin and then go in and out of the marketplace, or restart the game, all available skins on the profile revert to default. Even if i delete all the available skins from the profile, they are all reverted back to default. 

I do not believe this is the same issue as MCPE-28765

MCPE-28765 seems to refer to spawning into the nether portal frame.

I posted my comments in that thread as this one was linked and closed. This is not just taking a half heart of damage. This is dying at the coordinates you enter a portal in the dimension you are going to. Lets say you enter a portal in the nether at 12 50 20, you suffocate in the ground in the over-world at the same coordinates.

I tested this out by heading to the the x,z coordinates on the over-world that the portal was at in the nether and found my inventory in a clump on the surface.

see my comments at MCPE-28765

Altho my experience may be a different issue, since spawning in the top block sounds legit, I will still update from my previous post since it regards dying from going through a portal.

I found a forum, but lost it, that mentioned when you first go through a portal it transports your character to the other dimension at the some coordinates of the portal you entered. It was said that if you desync from the server, prior do being placed at the exit location, and if the area at the location is not safe, you will take damage, Or die if the desync is long enough. Chances are, quitting the game while ticking down on the loading screen causes instant death. I had died when i quit within seconds of taking damage.

Continuing from my previous post.

The next time my friend loaded up their world, i traveled to the X,Z coordinates the portal in the nether was at in the over-world and found my inventory clustered together on the surface. 

Deaths in the nether may result in your inventory being above the top bedrock.

Windows 10 Bedrock 1.9.0

This has never happen to me before. Tonight, while playing, it has. I was playing on a friends world that we have been playing on for several months. While making paths through the nether to other areas, I opened a portal from the nether I went through and heard the damage ticks while on the loading screen. I waited for a few seconds then exited the game. Using the Xbox app I asked my friend if I died. They said I did. They reloaded the world from a backup, and we re-made the paths again. This time I had them break the nether portal to the jungle, where I exited, and I ran to the mesa to re-build the portal there in the over-world, the portal that killed me.

I created the portal from the mesa to the nether. I entered and had my friend fix the jungle portal. we tested both portals to make sure they were not linked. I entered and exited the nether twice from there, all was good. 

We finished the new path and went back to the home portal. My friend entered, I did a few seconds after. Again I was taking damage on the loading screen. I quite the game immediately. I asked my friend on the Xbox app if I died, I did. None of my items were found. I assumed it sent me to the void. I should not have taken enough damage to kill me before exiting the game.