All drop down menu items are framed by oversized bozes. Is my computer or is there some type of glitch in Musescore?

This started several months, occurring now and then in both Musescore2 and 3. I fact, the font size I see on the screen is way too small. Looks to be around 5-7 pica. I have no idea why this is occurring. My notion is the program my be responding to font enlargements inicurred when I am online and reading content from other sites. Range of enlargement 100% (normal) in increments of 10% to 130+%. Other than that, i am clueless. The size would not be a concern, except for the fact a bottom one-third of the drop down box cannot be accessed. Please help. I dig this program. It does what I need. Finale, with its 95 lb. manuals is unwieldy at best and I'm to old to deal with its steep learning curve. Sibelius was good, but when I stumbled on your product. I was sold. I am looking forward to replies. Note: I rarely use help programs associated with programs I use. 'Cuz they rarely help. Blogs and forums I find intimidating, what with the secret handshake, fraternal atmosphere and the "only those who need to know, know" attitude and the long and winding road to enlightment I often encounter comes of . . . Well, you get the picture. (Sorry about the long windedness). Is that even a word. Brian