Slide over window drag feature not working on iPad with mouse or trackpad since iPad OS 15.4

You need to search online for your nearest, “local” Apple store location and call contact phone numbers and call to make an appointment to have your Apple iPad diagnosed and options presented you.

Failing that,

You need to contact Apple support via the contact support link located at the upper right hand corner of every Webpage of these Apple support communities.

Use the Hardware Repair and/or Device Performance support categories.

OR

by installing and using the Apple Support app found in the iOS App Store.

Tap the iOS App Store link below.

https://apps.apple.com/us/app/apple-support/id1130498044

OR

Call contact Apple via the support numbers found in the link bekow.

Contact - How to Contact Us - Apple

Tap the link below.

Contact - How to Contact Us - Apple

Best of Luck to You!

After ANY iOS/iPadOS upgrade/update, you should ALWAYS perform a simple hard reset of your Apple mobile device.

For iPad models with a Home button, do a simple hard reset of your iPad by holding down both the Home and sleep/wake/power button simultaneously until your iPad goes to black and restarts with Apple logo, then release the buttons.

OR

For much newer design iPad models, without a Home button, try the new simple hard reset procedure for the new 2018/2020/2021 iPad Pros, 2020 iPad Air 4 and 2021 iPad Mini 6 models.

1. Press and release the volume up button.

2. Then immediately press and release the volume down button.

3. Then, press and hold the single sleep/wake/power button You will see the Slide to Power off button, but keep on holding down the power button until you see the Apple logo, then let it go.

Once you have performed all the steps, wait for a few seconds and your 2018 iPad Pro will boot up completely to the iPad Pro’s Lock screen.

Best of Luck to You!

To all,

After ANY iOS/iPadOS upgrade/update, you should ALWAYS perform a simple hard reset of your Apple mobile device.

For iPad models with a Home button, do a simple hard reset of your iPad by holding down both the Home and sleep/wake/power button simultaneously until your iPad goes to black and restarts with Apple logo, then release the buttons.

OR

For much newer design iPad models, without a Home button, try the new simple hard reset procedure for the new 2018/2020/2021 iPad Pros, 2020 iPad Air 4 and 2021 iPad Mini 6 models.

1. Press and release the volume up button.

2. Then immediately press and release the volume down button.

3. Then, press and hold the single sleep/wake/power button You will see the Slide to Power off button, but keep on holding down the power button until you see the Apple logo, then let it go.

Once you have performed all the steps, wait for a few seconds and your 2018 iPad Pro will boot up completely to the iPad Pro’s Lock screen.

Best of Luck to You!

Unfortunately with the last update the slide over feature of the trackpad has been disabled. I use to use this feature all the time. I now have to reach and slide from the right side of the screen with my finger. I think this is due to the new universal control feature which is messing around with the functionality. It keeps looking for an external monitor or a mac rather then picking up the apps in slide over. This really takes away from the experience of using multitasking on the ipad.

Yes I am seeing the same behavior on all iPads once upgraded to 15.4

Greetings tzf,

For the issue you are seeing with controlling your iPad with external accessories, you will be best served to Contact Apple Support directly for assistance.

Take care.

Same problem here after updating to 15.4 - 2020 iPad Pro 11”

Same here, on my 2018 11” iPad pro + Magic Keyboard.

It used to work just fine up until iPadOS 15.4.

This happened to me after enabling Universal Control. Slider over with trackpad no longer works even the MacBook is off.

I have to toggle the slide over manually using Globe Key + \