Thanks for your help.
By the way I want to report another problems too, I hope both of them can be fixed in the coming update.
I never turn off my computer and therefore it's not uncommon to having a explorer.exe crash.
Everytime explorer.exe crashed and get itself restarted. The 'make the bar appear on top of other windows' setting no longer working, every chrome browser I original docked to the left moved further left and under the tile bar. I had attached a screenshot for your reference.
When it happened, I have to untick the 'put the bar on the left side of the screen' option and then tick it again, move the tile bar to fix this problem.
Replicate Method : Lock the tile to the left side, Dock a browser to the left, Terminate the explorer.exe in task manager and restart it.