Dwarf Fortress Bug Tracker - Dwarf Fortress
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IDProjectCategoryView StatusDate SubmittedLast Update
0011542Dwarf FortressDwarf Mode -- Environmentpublic2020-05-12 04:192020-06-02 08:00
ReporterGhost1069 
Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusnewResolutionopen 
PlatformPCOSWindows 10 HomeOS Version10.0.18363 Build
Product Version0.47.04 
Target VersionFixed in Version 
Summary0011542: Constant collapses on the surface without cause
DescriptionSince I provoked a cave in in the surface, there have been constant reports (every few minutes) of "something collapse on the surface" without anything actually being there. There are no fires, no tiles at all, in fact, left in the z-level and area where the collapses are reported. The collapses do produce dust and push dwarves. Some structures (stone floors and a paved road) have been destroyed by these ghost collapses.
Steps To Reproduce
Additional InformationThe savefile where it can be observed is the same as in the 0011541 case: http://dffd.bay12games.com/file.php?id=15069 [^]
Tags0.47.04, Collapses, Save Included, trees
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Attached Files
Issue History
Date ModifiedUsernameFieldChange
2020-05-12 04:19Ghost1069New Issue
2020-05-12 04:19Ghost1069Tag Attached: 0.47.04
2020-05-12 04:19Ghost1069Tag Attached: trees
2020-05-12 04:19Ghost1069Tag Attached: Collapses
2020-05-12 06:43Ghost1069Note Added: 0040541
2020-05-12 06:47Ghost1069Note Added: 0040542
2020-05-12 06:48Ghost1069Tag Attached: Save Included
2020-05-13 00:26PatrikLundellNote Added: 0040544
2020-05-16 06:55Ghost1069Note Added: 0040550
2020-05-16 06:56Ghost1069Note Edited: 0040550bug_revision_view_page.php?bugnote_id=0040550#r16470
2020-06-02 08:00Ghost1069Note Added: 0040572

Notes
(0040541)
Ghost1069   
2020-05-12 06:43   
Also, the (original) collapse left some "ramp tops" hanging in the middle of the air.
(0040542)
Ghost1069   
2020-05-12 06:47   
Now there are a bunch of trees (including a multi-tile one) growing in the middle of the air

Savefile where it can be observed: http://dffd.bay12games.com/file.php?id=15071 [^]
(0040544)
PatrikLundell   
2020-05-13 00:26   
It's a known bug. 0009479.
(0040550)
Ghost1069   
2020-05-16 06:55   
(edited on: 2020-05-16 06:56)
Now there are ghost trees that dont give wood when cut and constantly respawn in the same spot. They can be cut and are at surface-level, however, not floating.

Note that they are in the same spot as the floating trees, but on the surface.
(0040572)
Ghost1069   
2020-06-02 08:00   
I have found a way around the glitch: building ramps and floor tiles to cut the trees. Some were one z-level above the ground, others were two z-levels above the ground and, finally, some were three z-levels above the ground.

Almost all of the trees caused a "something has collapsed on the surface!" message and dust. Once I had cut all the trees, however, the messages stopped, and the trees dont seem to grow above the ground anymore.

The ghost trees that I had observed before also disappeared.