I am using Quicken Classic Business and Personal (R59.18) on Windows 11 Pro. This problem has been going on for a long time, but it hasn't really been a problem for me until now (tax season). I have had Quicken installed on two separate laptops and the issue occurs with both. When I go to Planning → Tax Planner and navigate to "Business Income", I run into issues where Quicken completely freezes, specifically "Other Allowable Expenses" for SELF. If I click in the box for the dollar amount or click on the underlined Other Allowable Expenses, Quicken becomes completely unresponsive. It can't be closed without Task Manager (no top X, no right click task bar/close window), it can't be be toggled to (Alt+tab).