Incoherency: A random seed is already generated on "Create New World" screen despite the "Leave blank for a random seed" label.

What I expected was the seed's textbox field to be empty, or the "Leave blank for a random seed" label to be changed into "Leave blank for a new random seed" (on recreating a world) when creating a new world or something similar.

For what I can guess, this was due to a side effect from MC-191790, that made text the field boxes for seeds available when re-creating a world.

• Maybe this was a misunderstanding because of me, if that is the case, I apology for wasting your time.
• Still, I have to remove the characters inside the text box to write a custom seed, if this argument is valid but this report isn't, I will change the bug title into "A random generated seed appears when creating a world instead of appearing blank"

How to reproduce

1. Open "Create New World" from the level select menu.
2. Go to "More World Options"
   → A random seed already appears on the text field, this didn't happen in versions prior this one.