I already run it in administrator mode but I'll try a third party software to see if I can get multiple programs to register my mouse.
But I ran into another problem. I opened it today it was sized waaay too big and when I tried to make it smaller it got bigger. And every time I try and make it smaller it gets even bigger to the point I can't even see the end points to resize it T^T I couldn't even use the program anymore because of it. I couldn't even click on the help menu because it pops up somewhere I can't see or access and I have to alt F4 the program just to close it. Then I found out it was because was on a monitor that messing with the size. I got back down but it glitched and I guess it got too small? and wont open at all anymore. It says its open but I can't see it on my screen anywhere. Nor am I able to click it. I don't know what I did but I broke it I'm so sorry T^T Would an uninstall and reinstall fix it?
Is this in the latest version? I did fix a similar bug in 13.5.
I've been trying to get it to handle monitors with custom scaling (i.e. in your system display settings, each monitor has a scale option) but it's a bit tricky since i can only test with what I've got. I have been testing it with different monitor scales but mine only go up to 175%.
You don't need to reinstall to fix it, if you delete config.xml it will get recreated with the default values, including window size.