Word-wrapping: Fixed overzealous word-wrapping when glyph edge lands exactly on the limit. Because of this, auto-fitting exactly unwrapped text would make it wrap. (fixes initial 1.15 commit, 78645a7d).

docs/CHANGELOG.txt

@@ -43,6 +43,8 @@ Breaking Changes:
 
 Other Changes:
 - Window: Fixed InnerClipRect right-most coordinates using wrong padding setting (introduced in 1.71).
+- Word-wrapping: Fixed overzealous word-wrapping when glyph edge lands exactly on the limit. Because
+  of this, auto-fitting exactly unwrapped text would make it wrap. (fixes initial 1.15 commit, 78645a7d).
 - ImDrawList: Fixed CloneOutput() helper crashing. (#1860) [@gviot]
 - ImDrawListSlitter, ImDrawList::ChannelsSplit(), : Fixed an issue with merging draw commands between
   channel 0 and 1. (#2624)

imgui_draw.cpp

@@ -2692,7 +2692,7 @@ const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const c
         }
 
         // We ignore blank width at the end of the line (they can be skipped)
-        if (line_width + word_width >= wrap_width)
+        if (line_width + word_width > wrap_width)
         {
             // Words that cannot possibly fit within an entire line will be cut anywhere.
             if (word_width < wrap_width)