No, that is intentional and not an issue. Here's why.
At EARN, a lot of Stablecoins are issued and supported on different blockchains. We only support Ethereum ERC-20 at the moment.
Let's look at ETH, for example. ETH is the native asset on Ethereum and it was issued on its own blockchain.
However, we support a few Stablecoins on ERC20 - that also run on the Ethereum blockchain and, therefore have the same Ethereum transfer address. We are talking of Stablecoins such as USDt, USDC, BUSD, DAI.
BTC and BCH on the other hand, are on different blockchains so you cannot send BTC to a BCH address even if they have the same address format, it will result in permanent loss of funds.