when i use back gesture navigation to go back while i am on a tab... the tab should be closed just like in chrome... but instead it opens a new tab while all other tabs goes in the background. (when i am in home screen and i open a site. and after that i go back by gesture navigation a new tab Opens up while 1st open goes into the background... i have close it manually....) plzzz fix this. and there is no home button... when need to go to the main screen I can't. plzzzz fix these issues....