It's been years since I tried, but as far as I know Mycelium supports BIP38 too.
I vaguely remember it too (but I haven't used it for years), and I know that Mycelium also exports an encrypted backup of a private key in PDF with a random code.
That's good to know. Although it's not exactly straightforward option when you plan to create paper wallet, since you need to generate wallet/import private key, create backup and move backup to computer (which used to create paper wallet).
It's been years since I tried, but as far as I know Mycelium supports BIP38 too.
I vaguely remember it too (but I haven't used it for years), and I know that Mycelium also exports an encrypted backup of a private key in PDF with a random code.
I 've never used Mycelium, even though Andreas Antonopoulos used to mention it a lot. It must have been a pretty good wallet, but I 've noticed that for iOS, it has a warning.
iOS version of their wallet last updated 2 years ago[1]. That may be reason behind warning you see.
[1]
https://github.com/mycelium-com/wallet-ios