version 64.0.3272.0 (officail build) dev (32 bit)
Platform10147.0.0（official build) dev-channel kevin 
Firmware Google_kevin.8785.220.0


REPRO STEPS:
1.Switch to Zhuyin Compact layout
2.Long pressing some  key ,pop up a float window with single symbol displayed
3.Check its UI

Actual:
The symbol align not center , located in the left side of window
refers to attached screenshot

Note:
Ok in zhuyin Full layout and other layout 
 

Deleted: not center.png 2.0 MB

	not center.png 2.0 MB View Download