I recently upgraded to SnagiT 2019 from Snagit 9. I use multiple monitors in my work and find that Snagit gets confused when trying to capture an active Window on the first monitor. Snagit captures the 1st monitor and the 2nd monitor. Very annoying.
Hi - As you're new to Snagit 2019, I'd start by playing with the settings: Region: Region*, Window, and Full Window. * I also have 2019 and 3 monitors and can capture any app one one screen partial or full, and/or all 3 screens entirely or any portion thereof.