In my last post
https://steemit.com/bitcoin/@idunno/how-to-prepare-for-bitcoin-split
I wrote to be very careful when using the electrum cash wallet.
Unfortunately, my worst guesses have probably worked out. The creators of electrum on their official Twitter have issued a statement not only to make backups of resources but also not use the electron wallet(the new name of electrum cash) in the same machine:
https://twitter.com/ElectrumWallet/status/891954053110001665
Why?
Because in the source code for the electron someone found a command that scans your computer to find all the electrum keys. This command can be used to extract the BTC from the Electrum portfolio, even if we have made a backup (we have transferred funds to another wallet).
https://twitter.com/ElectrumWallet/status/891935330235973633
https://github.com/fyookball/electrum/commit/0fc02cceee9d3465849dcecb2c1126de7cf65550
Therefore, I am not recommending to use any products of BitcoinCash creators...