Fix for crash when setting is_focusable property in issue #5242
Fix for crash when setting is_focusable property in issue #5242

Issue #5242 https://github.com/kivy/kivy/issues/5242
Cheaterman/kivy,inclement/kivy,matham/kivy,jkankiewicz/kivy,akshayaurora/kivy,akshayaurora/kivy,inclement/kivy,rnixx/kivy,jkankiewicz/kivy,kivy/kivy,bionoid/kivy,akshayaurora/kivy,LogicalDash/kivy,KeyWeeUsr/kivy,rnixx/kivy,jegger/kivy,rnixx/kivy,manthansharma/kivy,matham/kivy,Cheaterman/kivy,manthansharma/kivy,bionoid/kivy,kivy/kivy,jkankiewicz/kivy,LogicalDash/kivy,Cheaterman/kivy,KeyWeeUsr/kivy,jegger/kivy,LogicalDash/kivy,matham/kivy,LogicalDash/kivy,KeyWeeUsr/kivy,kivy/kivy,matham/kivy,manthansharma/kivy,jegger/kivy,jkankiewicz/kivy,Cheaterman/kivy,manthansharma/kivy,inclement/kivy,bionoid/kivy,KeyWeeUsr/kivy,bionoid/kivy,jegger/kivy