iPad Sidecar onscreen keyboard missing tab key
I want to mirror my Mac's screen to my iPad and then use my iPad to control my Mac from a different room, without using an external keyboard. This worked, with two exceptions. While mirroring the Mac's screen, the iPad's mirroring onscreen keyboard is missing both escape and tab keys. The command, option, and control keys are provided in the mirroring sidebar, but escape and tab keys are unavailable there, as well as missing from the onscreen keyboard.
Is there a way in which to use the escape and tab keys while mirroring my Mac's screen? These keys are necessary when working in Terminal and vim.
iPad Air 4 at latest iPadOS version
16" 2019 MacBook Pro at latest macOS version
iPad Air (4th generation)