Crashes upon moving the cursor into the the window

Running on Arch Linux, since version 0.13, Haroopad starts normally, but when I move my mouse cursor into the window for the first time, it crashes with the following error message:

[22646:0111/023028:ERROR:browser_main_loop.cc(162)] Running without the SUID sandbox! See https://code.google.com/p/chromium/wiki/LinuxSUIDSandboxDevelopment for more information on developing with the sandbox on.
ATTENTION: default value of option force_s3tc_enable overridden by environment.
[22646:0111/023032:ERROR:browser_main_loop.cc(206)] gdkdrawable-x11.c:942 drawable is not a native X11 window (http://bugs.chromium.org/329991)
The program 'haroopad' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
(Details: serial 355 error_code 3 request_code 18 minor_code 0)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)