Desktop App display/scaling issues on windows 10

I've recently upgraded to Windows 10 and am having some display issues with the HipChat desktop app, notably:

• buttons at the top of the window are obscured by the window bar (can't easily access settings, my status etc.)
• it is hard to click on items towards the edges of the window because the selection area recognised by the mouse is not aligned with the visual e.g. when clicking on a room or notification arrow towards the top of the window, you have to click about 7mm beneath the button you want.
• text and images are slightly blurry.
• all of the above should be visible in the screenshot.

I'm using HipChat Version 4.29.5.1662 with a lenovo windows laptop, viewing on external monitors. My monitors are set to the corerct resultion, with no scaling of apps. Other programs work normally.

Thanks