1. When on a shiritori page, if someone else plays a word, the game will automatically refresh. Wait for this to happen.
2. After the refresh, if you play a word that has already been played, a popup will show up saying "Another player has added a word. The puzzle has been reloaded." It will refresh again. This is the bug.
3. Playing the same word you tried to play just now, it will say "This word has already been used in this round"
Ideally 2 should not happen at all, so it should immediately go to step 3.