How do you retrieve a message you accidentally erased

On my Oneplus 3T, the phone won't add a notification to the list while using (/or recently using/) the app while multi-tasking. I've missed so many text messages because I was watching youtube up above textra, having the conversation end so using youtube full screen and not getting any new messages while the screen is on.
As a stop-gap, I've enabled the notification sound/vibration to go off when the app is open. So I at least know that I have a message to check.

For LG phones it is about adding just one line to AndroidManifest.xml before </aplication> tag at the end of file: <meta-data android:name="com.lge.support.SPLIT_WINDOW" android:value="true" />

I am surprised that this neat idea is after more than two years still waiting. Are there any technical difficulties?

Not enough apps support dual window support

LG V10

I agree, this feature would be very helpful! I watch stuff on You Tube often and always have to stop my video to text someone something. Being able to "split-screen" between Textra and You Tube would be a genius feature!!

Yes please. It would really be nice to be able to write a quick text without disturbing other open apps. Like when waiting at a pokestop with attached lure, I dont want to miss the opportunity to catch a pokemon because im texting :(
There are alot of other instances aside from this. Example, when i find a promocode on the net and i want to send a quick text about it.
The other messaging apps i use have the multi-window functionality like aquamail and telegram. I think a lot of users would be happy about this. Thank you!

Really the only main feature that the stock messenger on my Galaxy has that I want for Textra.

On the Galaxy S5 and Nexus, this would be a SPECTACULAR feature!

This would be great feature. (Galaxy s3)

This would be so helpful

This is one of the only drawbacks to textra!

this is the only feature keeping me from using textra as my default app on my galaxy s5.