If you intentionally put Memo/Notes on the right, and it goes beyond the side of your Quicken window, then it will always result in the horizontal scrolling you're trying to avoid. If you positioned the Memo/Notes column fully within the width of your Quicken window — either by moving the column to the left, or narrowing one or more columns enough that all the columns are fully visible in the window, or widening your Quicken window to create more horizontal space — you'd eliminate the horizontal scrolling.
I rarely do extensive work other than searches from the account groups in the sidebar (e.g. All Transactions or Cash or Credit Card); I work in individual account registers, so there's no column for Account in those registers. I've found I can narrow the date column so it's just wide enough for mm/dd/yy, and I narrow the Payee and Category columns a bit from their defaults so I can see enough to determine the field contents without seeing every character of long Payee names or Categories. I also use the two Payment and Deposit (money in/money out) columns instead of the unified Amount column, and even with the Transfer column visible, I can make Memo/Notes my widest column and fit all columns on a screen that's not quite the full width of my 13" laptop:
On my larger iMac screen, I can make the columns a bit wider. I could (and do in some accounts) also hide the Transfer column, allowing me to make the Memo/Notes column wider. The Memo/Notes field isn't wide enough for my longest notes, but the text scrolls within the field so there's no jumping.
You originally asked: "How can I stop the automatic shifting to the right when typing in the Notes section in Quicken?" The answer is simply to make all your columns visible within the width of your Quicken window. I always size my registers so there is no horizontal scrolling.
Could this be a Mac OS setting, dependent on the Primary Language, Region or other setting which enables "Right-to-left Reading Order", as is used some Oriental languages? In Quicken for Windows, there is such a setting and a simple keyboard command to enable/disable right-to-left reading order.
@UKR You're overthinking, I think. 😉 The original post said "the register shifts the view to the right", meaning it scrolls horizontally to the right, in order to make the active field fully visible. Quicken Mac by default does not show the Memo field, and when a user adds it, it appears on the far right — so horizontal scrolling is likely unless one has a large monitor and a wide Quicken window to show all the fields fully. As @RickO suggested, moving the Memo field further to the left, as well as possibly narrowing one or more fields, is likely to resolve this issue. I generally have Status, Date, Payee, Category, Memo as the first five fields in my registers.
@wWY245nY890PNy89 ,
in a Windows system, the right-to-left reading order can be set with a simple keystroke sequence. Please read this for more information.
In a Mac OS System, there may be something you need to set or change if your primary system language is defined as an Oriental language which writes and reads from right to left instead of US-English or another Western language. Search the Internet or ask Apple Support for help on that.