Can't delete any letters on item names on anvils

When I was going to name the rabbit "Killer Bunny" and "Toast" (I was going to rename it "Killer Bunny" again because last time I did it doesn't work so I was trying it again if it works.) on an anvil and when I'm going to rename the Name Tag, and when I press the Backspace key, it doesn't remove a letter. I thought my key is broken until I do it in a Notepad, it does remove it, Same with the chat bar in Minecraft but not on anvils. So, I had to restart my game to see if it still working like normal, turns out it's still had the same issue. I decided to report this issue I was having, and I hope it resolves later.

 

Later on, when i tried to edit a text by moving the cursor to the left, it did not go anywhere other than typing.

Steps on how it happened:

• Grab an anvil and place on any surface.
• Grab any kind of item you are going to rename it.
• Place the desired item in the anvil.
• Try to rename the item into any name you wish.
• When you press the Backspace key or move the cursor (the signature "_" / Underscore), it will just sit still.