Trying to add text to a poster i'm working on but when i hit RETURN, instead of cursor going to next line, it looks like it's going out the Z Axis, so looks like cursor is going up
Check your line spacing settings and similar. No doubt they are set to negative values and cause this behavior.
You can't put negative values in line spacing, but using lower values than for type size can cause overlap.
When you mention the z axis, it suggests that the next line appears to be further way and smaller. Is that the case. If we are not homing in your particular issue, grab the entire workspace to the clipboard, and paste to this thread