**October Update: a fix has been released for this issue. If you're experiencing this problem, please run an in-place upgrade by running the following file.
You might experience a blank or white rectangular box at the top left or your PC (or bottom right). The box will sometimes have a snapshot of the PC Readiness Monitor, even though the boot has already completed.
This box might appear after locking the screen and re-logging, or if you switch displays.
We are working on resolving the issue, as a workaround, you can disable Soluto's PC Readiness Monitor by right clicking Soluto's tray icon --> PC Readiness Monitor --> Never show: