-snip-
The whole post including the title is unclear,
is there an issue when you created a transaction or are you trying to create a transaction that has a custom change address?
I have having trouble with my electrum wallet. i was using the same seed, but the actual address changed on me. -snip-
Also, that first part seems like an entirely different issue.
If you mean the address in the receive tab, that's normal when you've already used the "
actual address";
Electrum will give you a new address after the previous one was used, but it's still in your wallet and useable if you wish to.