List of steps to reproduce (step by step, including full links if applicable):
- Go to e.g. https://pt.wikibooks.org/wiki/M%C3%B3dulo_Discuss%C3%A3o:Book
- Click on "Responder" ("Reply", in Portuguese) under any of the comments
- Add some text to the textbox which appears
- Click on "Antever resultado" ("Preview")
What happens?:
A popup shows the text
Leave site?
Changes you made may not be saved.
and the page is redirected to the non-existing page
https://pt.wikibooks.org/w/index.php?title=T%C3%B3pico:M%C3%B3dulo_Discuss%C3%A3o:Book/Altera%C3%A7%C3%A3o_de_limite_de_caracteres_para_colContent/resposta_(2)&action=submit
which shows:
No such thread
The thread you specified does not exist.
What should have happened instead?:
The preview of the text should be shown
Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc:
I've tested using Brave, Version 1.26.74 Chromium: 91.0.4472.124 (Official Build) (64-bit).
Possibly related bugs