Use iPad while charging

Your iPad is designed to be used both while connected to its Power Adapter and is charging - or from its battery alone. When used as a desktop computer, often while connected to an external monitor screen, the iPad will be connected to external power and will be charging continuously.

Your iPad will suffer no ill effects through being charged while it is being used - or being connected to its Power Adapter for extended periods. Your iPad will automatically regulate and optimise charging - and will not overcharge the battery. 

When used in kiosk applications - where external power is connected for extended periods of time - the iPad may modify its charging strategy and limit battery charge to ~80% of maximum. This modified charging strategy is designed to reduce chemical ageing that might otherwise occur if 100% charge is maintained at all times.

Nominal 100% charging will be restored when a normal charge/discharge routine is restored.

More information about iPad’s battery management can be found here:

About iPad and iPhone Charge Management Feature – Apple Support

Sure,

There are NO issues in doing that.

Been using iPads plugged into power and charging while using for nearly 13 years!

No issues, just may take longer for your iPad to reach 100% charge.