I believe the problem is as Clements suggests.
I would temporarily try to set DPI to normal, lower the font size, or temporarily disable the accessibility option that is on.
Basically it would look like anything that increases the size of the font, maybe it's 120% or something similar somewhere.
The problem you are experiencing is that Jabo never considered making his plugins DPI aware.
You could alternatively try NRage's plugin -- It's actually been kept up to date by the community so this might not be an issue for it.
We can be more help with a bit more information, some versions of Windows allow disabling the behavior you are seeing on a per-application basis.
P.S.
On Win10 I believe they renamed the DPI setting to "Custom Scaling" and if this is set higher than 100% that's a reason why you're seeing that behavior.