Canvas for VNC do not fill whole browser viewport

[baranoff-ivan]

When I maximize view with VNC session in my browser (Chrome or Firefox on Windows 7), it does not fill whole browser viewport.
While canvas width and height are properly set to 1920 and 1080 respectively, style's width and height are
1122px and 631px:
<canvas width="1920" height="1080" style="width: 1122px; height: 631px; cursor: default;">Canvas not supported.</canvas>
As a result I see something like this:

Any suggestions on how to solve my problem?

[lanwen]

Probably same problem as in #76

[vania-pooh]

Closing as duplicate then.