Selecting text no longer working properly in Outlook Web App on MacOS

Temporary solution (a little long-winded but I use alt-shift-arrow 20 times an email and got so annoyed by this problem I had to do something):

EDIT! PLEASE SEE BEN UNGURUN'S POST BELOW for a slightly tweaked version from someone who uses TamperMonkey more regularly than me :)

1. For Chrome/Edge, install the TamperMonkey extension so you can add a UserScript (Firefox has UserScripts built-in I think)
2. Add the following UserScript (modified from https://superuser.com/questions/168087/how-to-forbid-keyboard-shortcut-stealing-by-websites-in-firefox):

// ==UserScript==

// @name Disable Alt+shift+arrow interceptions

// @description Stop websites from highjacking keyboard shortcuts

//

// @run-at document-start

// @include https://outlook.office.com/*

// @grant none

// ==/UserScript==

// Keycode for arrow keys.

keycodes = [37, 38, 39, 40];

(window.opera ? document.body : document).addEventListener('keydown', function(e) {

if (keycodes.indexOf(e.keyCode) != -1 && e.shiftKey && e.altKey) {

    e.cancelBubble = true;

    e.stopImmediatePropagation();

}

return false;

}, !window.opera);

Very clever, love this!!

Excellent! I can option+shift+arrow again! Thanks for that bit o' code, Oliver.

I used TamperMonkey on Firefox / OSX, and made a few tweaks to avoid upsetting the TamperMonkey checks:

• Changed @include to @match
• Added @version with today's date afterward (doesn't matter but makes TamperMonkey happy)
• added "var" before the "keycodes" line

Updated code that worked for me on Firefox without TamperMonkey complaining:

// ==UserScript==
// @name Disable Alt+shift+arrow interceptions
// @description Stop websites from highjacking keyboard shortcuts
// @version 2024-04-10
// @run-at document-start
// @match https://outlook.office.com/*
// @grant none
// ==/UserScript==

// Keycode for arrow keys.
var keycodes = [37, 38, 39, 40];

(window.opera ? document.body : document).addEventListener('keydown', function(e) {
if (keycodes.indexOf(e.keyCode) != -1 && e.shiftKey && e.altKey) {
e.cancelBubble = true;
e.stopImmediatePropagation();
}
return false;
}, !window.opera);

Thank you so much for that visibility

I couldn't get Oliver's version to work - but these tweaks were successful! What a relief!