@tabmow I'm with you on this.
Just today Opera updated to Version:56.0.3051.52 and the text box issue other's have posted have shown up.
I'm on Win 10 x64 - 1803
newest driver for Nvidia GeForce GTX 1070 416.34 - WHQL
Release Date Thu Oct 11, 2018
Turning off hardware acceleration fixed it but what's up with this bug? It wasn't there in the previous version of Opera I had before hand. Can't say exactly what version it was though.