Removing selection from heatmap does not remove shading Declined - Duplicate

Dear SyncFusion support team,

I have played around with your heat map selection demo (

) and encountered a bug:

When selecting a cell, all other cells are shaded to a less prominent color. When you hold ctrl and click further items, you can add more cells to the selection. However, when you remove all cells from the selection, the original color is not restored. Instead, all cells remain shaded. I assume, this is not the expected behavior. How can the original state be restored after selecting an element?

Original state:

After selecting multiple items with ctrl+click:

After deselecting all items with ctrl+click:

Cheers,
Christoph