InputTextMultiline: fixed vertical tracking with large values of FramePadding.y. (#3781, #4794)

docs/CHANGELOG.txt

@@ -66,7 +66,8 @@ Other Changes:
 - InputText: made double-click select word, triple-line select line. Word delimitation logic differs
   slightly from the one used by CTRL+arrows. (#2244)
 - InputText: fixed ReadOnly flag preventing callbacks from receiving the text buffer. (#4762) [@actondev]
-- InputText: fixed incorrect padding when FrameBorder > 0. (#4794, #3781)
+- InputTextMultiline: fixed incorrect padding when FrameBorder > 0. (#3781, #4794)
+- InputTextMultiline: fixed vertical tracking with large values of FramePadding.y. (#3781, #4794)
 - Separator: fixed cover all columns while called inside a table. (#4787)
 - Clipper: currently focused item is automatically included in clipper range.
   Fixes issue where e.g. drag and dropping an item and scrolling ensure the item source location is

imgui_widgets.cpp

@@ -4693,7 +4693,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
                 // Test if cursor is vertically visible
                 if (cursor_offset.y - g.FontSize < scroll_y)
                     scroll_y = ImMax(0.0f, cursor_offset.y - g.FontSize);
-                else if (cursor_offset.y - inner_size.y >= scroll_y)
+                else if (cursor_offset.y - (inner_size.y - style.FramePadding.y * 2.0f) >= scroll_y)
                     scroll_y = cursor_offset.y - inner_size.y + style.FramePadding.y * 2.0f;
                 const float scroll_max_y = ImMax((text_size.y + style.FramePadding.y * 2.0f) - inner_size.y, 0.0f);
                 scroll_y = ImClamp(scroll_y, 0.0f, scroll_max_y);