Register data entry flipped right-to-left
While in a Quicken banking account register, move the mouse pointer somewhere inside the register and click the Windows Application Key aka Windows Menu Key. On a desktop keyboard it is usually located immediately to the left of the right CTRL key. Not all keyboards have this key, some laptops may not have it. The key looks like a popup window, a rectangular box with a few lines in it and a mouse pointer arrow. If you don't have this key, press SHIFT+F10 instead. This should open a popup window with an option "Right-to-left reading order". Click it to check it and see if that gives you the results you're looking for. If not, click it again to uncheck it and everything should be back to normal.
This only works for data entry in a register's selected field. Once you tab away from the field, the displayed data revert to showing left aligned again.