Issue description
Attempting to dismiss the alert that an ore sorter is blocked due to a full output will result in that alert rapidly duplicating. In just a few seconds my 2 blocked ore sorters created 112x this alert before I could restore the dismissed alert to visible state. These alerts persist even after enough material has been removed from the sorter to clear the issue.
Reproduction steps
Create a mining area and ore sorter to separate rock from other material.
Do not allow trucks to dump rock.
Wait for ore sorter to fill to capacity on rock.
Create zone/allow trucks to dump rock.
Dismiss alert for Ore sorting plant: blocked due to full output. At this point the dismissed alert will begin to duplicate multiple times per second, even while trucks move to empty the rock that has filled the ore sorter.
Game version and build number
v0.7.1 (b407)
Operating system
Windows