While typing in the custom seed textbox, pressing my Twitch Broadcast hotkey, o, causes broadcast dialogue to open rather than just typing an o.

What I expected to happen was...:
An o to appear in the textbox.

What actually happened was...:
Opened "Are you sure you want to start broadcasting?" dialogue.

Steps to Reproduce:
1. Open Minecraft.
2. Open Options.
3. Open Controls.
4. Under Streaming, set Start/Stop Stream to any letter key (a, b, c, ect).
5. Click Done, then Done again.
6. Click Singleplayer.
7. Click Create New World.
8. Click More World Options.
9. Click into the "Seed for world generator" textbox.
10. Press your Twitch Broadcast hotkey.

This works with default key F6 as well, but it's not so much of an issue, as the F6 key wouldn't be pressed during text entry.