Samsung A70 android version 10 closing apps

[Android Central Question]

Hi, I keep some of my apps open on my phone in the recently used apps section accessible via the shortcut "key" on the left on the screen, the 3 lines,but my phone has started closing them and it says no recently used apps. anybody got any idea why this happening without me changing any thing?

 

[mustang7757]

You can lock recently used apps, what shortcut key to left of screen you referring to?

I'll leave a Link to register so you can communicate here as a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[freeflowscot]

the one on the left bottom looks similar lkike this lll and brings recently used apps if they were not closed