Shift + Scroll deselects timeline cells, breaking Shift + Click range selection

[aquackmcquack]

Is your feature request related to a problem? Please describe.
Expected Behavior: Shift + Clicking a second cell on the xLights timeline should highlight all cells between the first selected cell and the second cell after a Shift + Scroll.

Actual Behavior: If you Shift + Scroll with the mouse wheel after selecting the first cell, the initial cell becomes unselected. This breaks the ability to Shift + Click a second cell to select a range.

Describe the solution you'd like
Allow scrolling on the timeline (via Shift + Scroll on a standard mouse wheel) while preserving the active cell selection and anchor point. Users should be able to select a cell, Shift + Scroll to another part of the timeline, and Shift + Click a second cell to complete the range selection.

Describe alternatives you've considered
The only workarounds available are zooming out to view the entire target range or manually dragging the timeline scrollbar. However, zooming out introduces new issues:

Selection accuracy on effect cells: When zoomed out, cells containing effects trigger effect-editing cursors instead of the standard selection pointer. Selecting the cell requires hunting for a tiny spot where the normal pointer appears, sometime impossible to find, or selecting an adjacent empty cell—which risks accidentally grabbing unwanted effects.

Additional Suggestion:
Expand Shift + Click range selection functionality so it registers regardless of which cursor tool or context pointer is active over a cell (e.g., when hovering over an effect). This would allow reliable range selection even when zoomed out.

Additional context
I am using the Windows version.

[AGFazio]

What would be the use case for this?

[aquackmcquack]

My use case for it is when selecting cells to copy or to move effects using Shift + Click (To select multiple cells at the same time). I always use Shift + Scroll to edit my sequences. So when Shift + Scroll to scroll over to apart of the sequence to a cell that is not quite on screen, the first cell I selected deselects and Shift + Click no longer lets me select all those cells from the first cell I selected..

[cybercop23]

This shouldn't require timing marks to be selected. Anything captured between the first select (effect click - not under handle) and slide or scroll and then shift click on effect should select appropriate effects.

[aquackmcquack]

@cybercop23 , I actually didn't noticed but Shift + Click after a Shift + Scroll does work on multi selecting effects individually. You comment made me think about checking that as well

So to be clear, It's the Lasso effect where you click and drag from a blank part of the timeline to another blank part to lasso those effects. Shift + scroll using the mouse wheel stops the lasso when trying to drag it across. I also use clicking on a blank spot then Shift + Click another part of the timeline and if I use Shift + Scroll to scroll the timeline window, it will break that as well