WPS Office determines screen resolution incorrectly

I'm trying out [WPS Office](http://wps-community.org/) (version Alpha21 10.1.0.5672~a21). The first issue I'm running into is a display bug: the display is compressed horizontally (or elongated vertically, whichever). Only the document display is affected, the user interface part is fine. This isn't a font issue: I see this with every font, and with figures. In the screenshot below, the blue rectangle is in fact a 1cm×1cm square, and the PDF output is correct. On startup, WPS Office shows a “System Check” window which mentions > System DPI is asymmetric. WPS Office may have display issues. The “solution” link leads to http://community.wps.cn/wiki/dpix_not_equal_dpiy which is a broken link. If the solution exists anywhere on the web now, I can't find it (possibly because it's in Chinese only). xrandr output (that's actually 158dpi both horizontally and vertically, so whatever WPS Office is doing to determine the resolution, it's mistaken): Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767 eDP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 173mm I use Sawfish without a destkop environment. [Fouad](https://unix.stackexchange.com/users/247050/fouad) reports that he has the same issue under XFCE, but not under Cinnamon. How can I make WPS Office display document content at a correct aspect ratio?