Still taking two attempts for installs to "take" with the Spitfire App...

I'm still finding that if I download and install a product in the Spitfire Audio app on Windows 10, if I close down the app and then run it again, the product has switched back to being uninstalled. Once I've downloaded it and installed it again, it will show up in the app as expected. This doesn't just happen occasionally, it happens with everything I install with the app: all the LABS plugins, a couple of Originals I bought recently...

Anyone else experiencing this? And has anyone got a fix?