diff --git a/docs/src/docPages/api/extensions/text-align.md b/docs/src/docPages/api/extensions/text-align.md
index 2ea2f2e92..bc0b4f84d 100644
--- a/docs/src/docPages/api/extensions/text-align.md
+++ b/docs/src/docPages/api/extensions/text-align.md
@@ -4,6 +4,10 @@
 
 This extension adds a text align attribute to a specified list of nodes. The attribute is used to align the text.
 
+:::warning Firefox bug
+`text-align: justify` doesn't work together with `white-space: pre-wrap` in Firefox, [that’s a known issue](https://bugzilla.mozilla.org/show_bug.cgi?id=1253840).
+:::
+
 ## Installation
 ```bash
 # with npm