diff --git a/source/blender/editors/space_text/text_draw.cc b/source/blender/editors/space_text/text_draw.cc
index 72ee4fa6f82..83fb906e5ce 100644
--- a/source/blender/editors/space_text/text_draw.cc
+++ b/source/blender/editors/space_text/text_draw.cc
@@ -1790,33 +1790,34 @@ bool ED_space_text_region_location_from_cursor(const SpaceText *st,
                                                const int cursor_co[2],
                                                int r_pixel_co[2])
 {
-  TextLine *line = nullptr;
+  Text *text = st->text;
 
-  if (!st->text) {
-    goto error;
+  if (!text) {
+    return false;
+  }
+  TextLine *line = static_cast<TextLine *>(BLI_findlink(&text->lines, cursor_co[0]));
+  if (!line) {
+    return false;
   }
 
-  line = static_cast<TextLine *>(BLI_findlink(&st->text->lines, cursor_co[0]));
-  if (!line || (cursor_co[1] < 0) || (cursor_co[1] > line->len)) {
-    goto error;
+  /* Convert character index to char byte offset. */
+  const int char_ofs = BLI_str_utf8_offset_from_index(line->line, line->len, cursor_co[1]);
+  if (char_ofs < 0 || char_ofs > line->len) {
+    return false;
   }
-  else {
-    int offl, offc;
-    int linenr_offset = TXT_BODY_LEFT(st);
-    /* handle tabs as well! */
-    int char_pos = space_text_get_char_pos(st, line->line, cursor_co[1]);
 
-    space_text_wrap_offset(st, region, line, cursor_co[1], &offl, &offc);
-    r_pixel_co[0] = (char_pos + offc - st->left) * st->runtime->cwidth_px + linenr_offset;
-    r_pixel_co[1] = (cursor_co[0] + offl - st->top) * TXT_LINE_HEIGHT(st);
-    r_pixel_co[1] = (region->winy - (r_pixel_co[1] + (TXT_BODY_LPAD * st->runtime->cwidth_px))) -
-                    st->runtime->lheight_px;
-  }
+  /* All values are in-range, calculate the pixel offset.
+   * Note that !126720 provides a useful interactive test-case for this logic. */
+  const int lheight = TXT_LINE_HEIGHT(st);
+  const int linenr_offset = TXT_BODY_LEFT(st);
+  /* Handle tabs as well! */
+  const int char_pos = space_text_get_char_pos(st, line->line, char_ofs);
+
+  int offl, offc;
+  space_text_wrap_offset(st, region, line, char_ofs, &offl, &offc);
+  r_pixel_co[0] = (char_pos + offc - st->left) * st->runtime->cwidth_px + linenr_offset;
+  r_pixel_co[1] = (region->winy - ((cursor_co[0] + offl - st->top) * lheight)) - lheight;
   return true;
-
-error:
-  r_pixel_co[0] = r_pixel_co[1] = -1;
-  return false;
 }
 
 /** \} */
diff --git a/source/blender/makesrna/intern/rna_space_api.cc b/source/blender/makesrna/intern/rna_space_api.cc
index a4704e4cb6a..f199a5b7b55 100644
--- a/source/blender/makesrna/intern/rna_space_api.cc
+++ b/source/blender/makesrna/intern/rna_space_api.cc
@@ -71,7 +71,9 @@ static void rna_SpaceTextEditor_region_location_from_cursor(
   if (area) {
     ARegion *region = BKE_area_find_region_type(area, RGN_TYPE_WINDOW);
     const int cursor_co[2] = {line, column};
-    ED_space_text_region_location_from_cursor(st, region, cursor_co, r_pixel_pos);
+    if (!ED_space_text_region_location_from_cursor(st, region, cursor_co, r_pixel_pos)) {
+      r_pixel_pos[0] = r_pixel_pos[1] = -1;
+    }
   }
 }