I've found the main issue.
If you have more than 63 mud runes in your inventory it breaks and you can't craft them except for one at a time.
If you have less than 63 you can craft multiples at a time.
Here is a video of it:
I think this is the same glitch/error that caused this.
Just wanted to document it so you know it's not just a summoning only glitch and it's happening with more than just that.
Cannot grind mud runes down into Ground mud runes, qty stuck at 0.
You can double click the qty box to ground 1, but it only will do 1.
Steps to reproduce:
- Try to grind a mud rune.
- Attempt other fixes, such as changing the Category to herblore ingredients, still doesn't work.
- Select and re-select another item and it will show the qty bar at full (10) for a brief second.