Plugin broken after update to krpano 1.19

I updated my krpano files using the krpano tool so that I can make use of the WebVR plugin. Everything works fine except that my custom plugin suddenly broke.

I use a Javascript plugin to add HTML to my panorama's, using this example from the documentation: https://krpano.com/docu/plugininterface/#js

After the update from 1.18.4 to 1.19, I get this Javascript error when the plugin is loaded: plugin.sprite is null

The pluginobject contains roughly the same object as before, but plugin.sprite.appendChild(text); does seem to trigger this error now and the HTML is not added.

Can somebody help me with this?

That fixes it, thank you!

I see that the HTML created by my plugin doesn't show when (simulated) WebVR mode is enabled.
Can we fix that?

Thank you, is there any chance this will be possible in the future?

I understand.

I've been playing with different plugins within VR mode. I got images and video's working, but I couldn't find any examples of textarea's or buttons with text (that are not images), visible in VR.
I guess this just isn't possible for now without any hacks?

Thanks for the quick response btw!