UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/69.0.3497.81 Chrome/69.0.3497.81 Safari/537.36

Steps to reproduce the problem:
Please fill in the following items if you don't know the root cause.

Which distribution and version?:
(E.g. Fedora 27. Check /etc/fedora-release)
Arch Linux

Which desktop environment and version?:
(E.g. GNOME 3.24. Check $XDG_CURRENT_DESKTOP and your ISO image.)
GNOME 3.26

Which session type?:
(X11 or Wayland. Check $XDG_SESSION_TYPE)
Wayland

Which application and version?:
(E.g. gedit 3.24, leafpad, kate, xterm)
Atom
Chrome
All Electron(Chromium) based program.

IBus version?:
(Run ibus version)
IBus 1.5.17

Issue description:
IBus got a wrong position in Electron or Chrome programs, I have a 4K screen with 200% scale, it always shows Chinese frame out of screen bottom, and I cannot see what character in the frame.

Steps to reproduce:

Run Chrome with a hidpi screen.
Use ibus-rime Chinese (I think it's not a rime specific issue but I am using RIME)
Type.
Can you reproduce your problem when you restart ibus-daemon? (yes / no):
(Run ibus exit and ibus-daemon --xim &)
yes

Do you see any errors when you run ibus-daemon with the verbose option?:
(Run ibus-daemon --xim --verbose & and look at the output when you encounter your problem.)
no

Can you reproduce your problem with a new user account instead of the current your account? (yes / no):
yes

What is the expected behavior?
with correct position of input frame when typing in Chromium based program with a HiDPi screen.

What went wrong?
IBus got a wrong position in Electron or Chrome programs, I have a 4K screen with 200% scale, it always shows Chinese frame out of screen bottom, and I cannot see what character in the frame.

Did this work before? N/A 

Chrome version: 69.0.3497.81  Channel: stable
OS Version: Ubuntu 18.04
Flash Version: None
 

Deleted: wrong-position.png 417 KB

	wrong-position.png 417 KB View Download