Version of OpenTTD

1.11.1

Expected result

When clearing an area of tiles, the clear action should ignore any tiles that are already cleared (bare land, appearing as brown dirt). Any tiles that are not fully bare land (such as any stage of grass, snow or desert) still get cleared as normal.

Actual result

When clearing an area of tiles, the clear action will clear tiles that are already cleared (bare land), which, when combined with very low landscaping limits, means that you have to select lots of very small areas, increasing the complexity and number of unique clicks you have to do to clear a large area. By contrast, planting trees and terraforming can be performed gradually just be selecting the same large area over and over again, even on very low landscaping limits.

Steps to reproduce

1. Start a new game (at least 256x256).
2. Open the cheats window and increment your money several times (so that you have a couple hundred million GBP or equivalent).
3. Open viewports at the top (first tile) and bottom (last tile) of the map.
4. Drag the clear area tool from the top of the map to the bottom of the map several times.
5. Notice that after the first clear, the land area that is cleared will not increase with subsequent clears.
6. Drag the level land tool from the top of the map to the bottom of the map several times.
7. Notice that after the first level land iteration, the land area that is flattened will increase with subsequent iterations.