diff --git a/src/ui/root.c b/src/ui/root.c

index 7637d842..6f2868b7 100644

--- a/src/ui/root.c

+++ b/src/ui/root.c

@@ -2160,7 +2160,10 @@ iRect visibleRect_Root(const iRoot *d) {

#endif

#if defined (iPlatformDesktop)

 /* Apply the usable bounds of the display. */

- SDL_Rect usable; {

+ SDL_Rect usable;

+ /* TODO: Needs some investigation. With multiple monitors, at least on macOS, the bounds

+ returned here seem incorrect sometimes (infrequently). */

+ if (iFalse) {

     const float ratio = d->window->pixelRatio;

     SDL_GetDisplayUsableBounds(SDL_GetWindowDisplayIndex(d->window->win), &usable);

     iInt2 winPos;

diff --git a/src/ui/widget.c b/src/ui/widget.c

index addab9f0..ef2ac868 100644

--- a/src/ui/widget.c

+++ b/src/ui/widget.c

@@ -1291,19 +1291,25 @@ iBool scrollOverflow_Widget(iWidget *d, int delta) {

 }

 iRect       bounds        = boundsWithoutVisualOffset_Widget(d);

 const iRect winRect       = visibleRect_Root(d->root);

+ /* TODO: This needs some fixing on mobile, probably. */

+// const int yTop = iMaxi(0, top_Rect(winRect));

+// const int yBottom = bottom_Rect(winRect);

 iRangei     validPosRange = { bottom_Rect(winRect) - height_Rect(bounds),

                               iMaxi(0, top_Rect(winRect)) };

- if (validPosRange.start > validPosRange.end) {

- validPosRange.start = validPosRange.end; /* no room to scroll */

- }

+// if (validPosRange.end < validPosRange.start) {

+// validPosRange.end = validPosRange.start; /* no room to scroll */

+// }

+// if ((!isTopOver && delta < 0) || (!isBottomOver && delta > 0)) {

+// delta = 0;

+// }

 if (delta) {

- if (delta < 0 && bounds.pos.y < validPosRange.start) {

- delta = 0;

- }

- if (delta > 0 && bounds.pos.y > validPosRange.end) {

- delta = 0;

- }

- //printf("delta:%d validPosRange:%d...%d\n", delta, validPosRange.start, validPosRange.end); fflush(stdout);

+// if (delta < 0 && bounds.pos.y < validPosRange.start) {

+// delta = 0;

+// }

+// if (delta > 0 && bounds.pos.y > validPosRange.end) {

+// delta = 0;

+// }

+// printf("delta:%d validPosRange:%d...%d\n", delta, validPosRange.start, validPosRange.end); fflush(stdout);

     bounds.pos.y += delta;

     if (delta < 0) {

         bounds.pos.y = iMax(bounds.pos.y, validPosRange.start);

@@ -1316,7 +1322,10 @@ iBool scrollOverflow_Widget(iWidget *d, int delta) {

     }

 }

 else {

- bounds.pos.y = iClamp(bounds.pos.y, validPosRange.start, validPosRange.end);

+ /* TODO: This is used on mobile. */

+ 

+// printf("clamping validPosRange:%d...%d\n", validPosRange.start, validPosRange.end); fflush(stdout);

+// bounds.pos.y = iClamp(bounds.pos.y, validPosRange.start, validPosRange.end);

 }

 const iInt2 newPos = windowToInner_Widget(d->parent, bounds.pos);

 if (!isEqual_I2(newPos, d->rect.pos)) {