Taskbar not showing in start screen or metro apps

[JP_Arg]

Ok, so i have the windows store pinned to my taskbar (im using windows 8.1 ) so when i'm on the start screen or any metro app i can see the taskbar when i move the cursor to the bottom of the screen. The problem is, after using my laptop for a while, the taskbar stop showing , the only thing i can do is move the cursor to the bottom left of the screen to see the windows button. The only way to see the taskbar again is rebooting my laptop.
This happens when i'm on the start screen or any other metro app.
Very annoying
Does anyone have the same problem? Any solution?

Thanks in advance

 

[GrandGerminator]

I had the same problem ! I resolve it by closing some apps. It seems that some apps in some process are generating this bug when they pops up, so closing it could clear this issue. However I had this issue on desktop (I'm hiding this bar in metro and modern apps)