I am running 1.5.3 svn (1.5.3svn~r22185~20171007 from ubuntu PPA) and IIRC some months before I could hyphenate English text by Extra/Hyphenate Text, and it would just do the hyphenation. Now when I go to hyphenate, the "Possible hyphenation" dialogue will pop up for almost every single word in the text. I tried both with Document Setup / Hyphenator / Hyphenation suggestions on and off, same behavior.
How to just do the hyphenation without any further dialogues? Or is it a regression? Thanks!