Windows: Launching Playtime sometimes just displays a white box

[Whiskeysaurus]

When I try to launch Playtime via any method, it just renders as a white box. ReaLearn and SoundPot work fine.
I'm on Windows 10. Reaper 7.22. Done all of the obvious things like syncing packages, and uninstalling/reinstalling the package.
I installed via reapack. Also attempted to install via ReaBoot. I'm not sure how to uninstall ReaBox without wiping my entire reaper config.

[helgoboss]

Which version (you can check by opening the Helgobox plug-in, written at the bottom)?

Can you post a screenshot please of the white window?

If you open the App via Helgobox Plug-in => Menu => Open app, what do you see (Choose "Close app" before that if not greyed out)?

[Whiskeysaurus]

Helgobox v2.16.3

Here's the white box (sorry, ultrawide monitor....)

And here's the menu in the plugin at first launch

However, it looks like if I hide it once and show it, it might be good from then on.

[helgoboss]

Interesting, there was someone else reporting a similar issue. For him, it only occurred if there were already Helgobox instances in the same project. Is this the same for you?

Anyway, I could never reproduce it :(

[FakenameMusic]

Same issue here, happening with a single instance of Playtime 2 launched in a Reaper session.
I don't know if it helps to know too: Apart from the occasional "white box" issue, I very frequently see a short flash of white as the Playtime UI launches, and then it resolves to the usual UI - literally a small fraction of a second the UI is white (like the white box" problem above).
I tried to screen cap video of it, but my capture software does not capture Playtime's floating window.