Looking at hardware wallets for alt coins, read in a few places various hardware wallets have lost holdings upon recovery.
Maybe its FUD maybe its real, but assuming its real & not wallet theft how could this happen if the holdings are on the relevant blockchain?
This is impossible to answer without more specific information about the incidents. It is possible that it is FUD or fake.
I mean if i had a tangem or SafePal wallet for example with multiple coins, Kaspa, Render, beam, cardano etc.. and i had to reset the app or recover via seed option (avail now on tangem) would i get exactly the same amount of each coin back? if not where would they go?
Assuming there is no hack or theft involved, the coins will not go anywhere. They will still be on the blockchain with their respective addresses. If you restore the wallet with the same seed, there is no reason not to get all the coins back. To ensure you can recover your wallet addresses, even on third-party apps, its a good idea to write down both your seed phrase and derivation paths for all coins you use.
Its an issue with these app based cold wallets, sooner or later you`ll get on a plane, walk up a mountain or just out of an internet reception area or the app will just freeze & need re-setting after a while so can these things be trusted long term?
Many of the most popular HW wallets also support third-party apps, so you dont have to use their app if you dont want to.