Random Lines while writing on Ipad How do I resolve this?

Hello Ga89A,

It appears you have done some pretty solid and thorough troubleshooting. Good job!

Be sure that the iPad is up to date with both iPadOS and the apps themselves.

To update iPadOS, follow these steps from Update your iPhone or iPad:

Update your iPhone or iPad wirelessly

1. Back up your device using iCloud or your computer.

2. Plug your device into power and connect to the internet with Wi-Fi.

3. Go to Settings > General, then tap Software Update.

4. If you see more than one software update option available, choose the one that you want to install.

5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do.

To update the apps on the device, these steps from How to manually update apps on your Apple device - Apple Support will walk you through it:

How to manually update apps on your iPhone or iPad

1. Open the App Store.

2. Tap your profile icon at the top of the screen.

3. Scroll to see pending updates and release notes. Tap Update next to an app to update only that app, or tap Update All.

If everything is up to date, and the issue continues, reaching out to Apple Support is going to be the next step to take. They can be reached here: Get Support

They will be in the best position to assist further.

Have a good day.