When searching and replacing a single character (e.g. replacing a by z) and if the letter is repeated in the text (aa aaa …), the repeated letters are reduced to a single letter (aaa becomes z) after clicking the button Replace all.
I would expect that aaa becomes zzz.
N.B. When using repeatedly the Replace button instead, every single letter is correctly replaced.
[Affinity Publisher for Mac 2.1.1, macOS Monterey 12.6.7.]
P.S. Could this above be related to that ancient bug?