After https://github.com/bitpay/bitcore/pull/2219 was merged into Bitcore latest release https://github.com/bitpay/copay/releases/tag/v6.1.0 supports sending to P2WPKH and P2WSH addresses.
After bitpay/bitcore#2219 was merged into Bitcore latest release https://github.com/bitpay/copay/releases/tag/v6.1.0 supports sending to P2WPKH and P2WSH addresses.