I don't have a 4K monitor to test and reproduce with, but if you do and can replicate this problem see if changing the app compatibility settings in relation to DPI for the brain editor helps. See
https://blog.marcomaas.com/2020/05/22/fixing-high-dpi-scaling-issues/If you try various settings and notice one way works better than the other please let me know which setting. I can modify the application's manifest file to force a particular compatibility setting.
