Describe the bug

The game responds appropriately to pressing the mouse button, but it doesn't register when the player is holding it down.
ark_of_treasure.zip

Expected behavior

In this game, the player is expected to hold down their mouse button to select adjacent items that are identical in color. As the button is pressed down, a counter appears, showing the number of the selected items.

Affected platform

Desktop app

Operating system

Windows 8.1

Browser

Mozilla Firefox 115.0.2

Additional information

I downloaded the .swf file from an online hosted version of the game, but the issue persists over various websites and the desktop app as well.