I experience same issue after the patch. I want to hold my button to aim down the sights.
This is from the config

<!-- I put RMB on ADS toggle. 'clickorhold' seems to be the best event I can map it to, to prevent unexpected ADS toggle -->

<input name="UAADSToggle">

<btn name="mBRight">
    <event name="clickorhold" />
</btn>

</input>

It's been working as intended yesterday, config didn't change.
Hold right mouse button to aim down the sight or the scope, if you stop holding, it goes back to normal stance. Right now it just raise the weapon without aiming.

Same with me, please give it a look, we just want to ads with right mouse button like any other game

I really don't like that only in DayZ there are restrictions with the ability to choose how I aim. I want to at least be able to choose to hold or receive only after pressing my gaze into the sight. Return it to how it was or if you want to do it better, then give the opportunity to set the results of holding and simple pressing. Those. so that I can select, if I hold, I can go straight into the sight. And so that this is a separate setting item. This will not affect the balance of the game in any way, since the animation of entering immediately into the sight is the same in time as if at the moment I just press the RMB once and release.
And so, to this day, I, as a person who has been playing Action all my life, am used to aiming by HOLD. You force an elephant to climb a tree and hope that the elephant will climb as easily as a monkey. Thank you. I love you anyway.

Experiencing this same issue as well. I normally have "toggle aiming down sights" bound to right mouse button, while having the "raise modifier" double-bound to my mouse 5 button and right mouse button. This would allow me to hold down right click and immediately have my gun go from idle and straight past hip-fire into ADS, while using the mouse 5 button for hip-fire. It seems the "toggle aiming down sights" function in the combat settings no longer works at all. I've tried to bind multiple things to it while having nothing bound to the raise modifier, and nothing has worked. The only way to full ADS is to single click right mouse button, or whatever is bound to the "raise modifier", which honestly feels horrible and has already caused issues for me. Instead of "toggle aiming down sights" controlling ADS, the raise modifier now has assignment over everything. Not sure if this is an intended change or a bug but it ruins gunplay for me sadly.

ADS on hold won’t work no matter what I set the keybind to after 1.24 seems like others are having the same issue too kinda makes the game unplayable since I have to revert years of muscle memory so please fix

I've built up 30 years of FPS muscle memory and this patch killed it. :(

I had the same issue today. Everytime when I tried to ADS it kept unscoping me. We did some trouble shooting today and found out that when you have the same button assigned to "Eye Focus" and "Toggle ADS" (in my case both where set to right mouse button), the issue occurs. If you reassign a different key to "Toggle ADS", the problem will be solved.
Down below a twitch link, to the solution that also shows the problem:
https://clips.twitch.tv/CuteVastMonkeyNerfRedBlaster-DKzvBPHSk0QApZbD

If you hold RMB to ADS, check out my work around described here: https://feedback.bistudio.com/T179284

Thanks for adding that workaround here, will check it out, nevertheless they should fix it properly!

Edit: Okay I checked it out, so this kind of makes ADS Hold work, yes, but then I miss the functionality to eye focus on middle mouse except I go to the config files and change it like you advised.

In T179211#2571006, @ChickenDancer wrote:

Thanks for adding that workaround here, will check it out, nevertheless they should fix it properly!

Edit: Okay I checked it out, so this kind of makes ADS Hold work, yes, but then I miss the functionality to eye focus on middle mouse except I go to the config files and change it like you advised.

Also when you are on mele, it does zoom for a half second before it raise hands for fight or mele.

Unfortunately and fortunately, I don’t have time to wait for the developers to find time to solve this issue, so I offer my solution to the aiming problem. All we need is to set up simultaneous RMB + focus on the right mouse button. This can be done using different mouse programming programs. I'm very sorry, but not all mice have this and not everyone can understand how to do it. I did this thanks to macros, first I press RMB, and then MMB with an 8ms increment. MMB is the middle mouse button, keep that in mind. She got me thinking. Well, in general, that's all. I've seen the options described above, but they all work poorly. There, either you lose focus of vision, or you need to integrate it into the game code. Or you won’t be able to jump on the usual button. See the link for a diagram of my solution. https://imgur.com/a/JFTHmEw

And by the way, the developers hid my solution; they themselves don’t want us to use it)

any progress on solving this?

In T179211#2571367, @FR0STY5STAR wrote:

In T179211#2571006, @ChickenDancer wrote:

Thanks for adding that workaround here, will check it out, nevertheless they should fix it properly!

Edit: Okay I checked it out, so this kind of makes ADS Hold work, yes, but then I miss the functionality to eye focus on middle mouse except I go to the config files and change it like you advised.

Also when you are on melee, it does zoom for a half second before it raise hands for fight or mele.

I can add that it doesn't always ADS when pressing RMB, sometimes it just raise weapon for hipfire, then you have to unzoom and wait 1 sec and click RBM to go into ADS. Ofcourse this is still better than not having working hold ADS at all, but still bad to use.

In T179211#2573156, @Geez wrote:

Resolved for the stable 1.24 hotfix.

has this update been implemented yet? Its still requires double tap shift for me to ADS

In T179211#2573738, @Leatherman wrote:

In T179211#2573156, @Geez wrote:

Resolved for the stable 1.24 hotfix.

has this update been implemented yet? Its still requires double tap shift for me to ADS

The hotfix has not been released yet.

dear Geez

any idea as to a date the hotfix will come out?

In T179211#2574338, @ADS.wontWork wrote:

dear Geez

any idea as to a date the hotfix will come out?

Today.

Well, not today, it's not listed in todays hotifx....

In T179211#2574569, @FR0STY5STAR wrote:

Well, not today, it's not listed in todays hotifx....

it fixed the bug for me. Thanks bohemia!

Why not implement it like PUBG does? There you can select between HOLD / TOOGLE for certain actions. Nevertheless the keybind. This works great for all playstyles.