Unfortunately the only way to fix this is using Qt 5 version of ReText. I had to do a last-minute revert to Qt 4 for Trusty, but you can try to install the .deb from Utopic, it should work well.
Unfortunately the only way to fix this is using Qt 5 version of ReText. I had to do a last-minute revert to Qt 4 for Trusty, but you can try to install the .deb from Utopic, it should work well.