Bugs Lists

Core Bugs (common to all systems)
Windows-only bugs
X11-only bugs
Macintosh-only bugs
Amiga-only bugs
Build-from-source issues (all platforms)
MS-DOS-only bugs
Spoiler bugs
Spoilers are bugs that merely reading about may spoil your enjoyment of the game or give away answers to puzzles that should be solved. They are on a different page to keep you from seeing them by accident in the main lists.
Bugs lists for previous versions

This information is also available in JSON here; the schema is described here.

5.0.0 Bugs Lists

Core Bugs (common to all systems)

ID Status Description Additional Info
C343-21 Open Pets can be pulled through closed doors with a leash.
C343-38 Open Dismounting or kicking a monster that jumps may result in landing on the wrong side of a wall.
C500-1 fixed Early startup options such as --showpaths may hang when run non-interactively.
C500-2 fixed New game startup message may say "Work-in-progress".
C500-3 fixed The mention_decor option gives a confusing message when starting the tutorial.
C500-4 fixed An off-screen vault guard can cause an impossible about trying to update map location <0,0>.
C500-5 fixed Some statue and figuring genders are incorrect.
C500-6 fixed Handling multiple items in a container may overflow a buffer.
C500-7 fixed Attended shrines may in irregular rooms may not work correctly.
C500-8 fixed Experience-level highlighting may not work correctly.
C500-9 fixed The tutorial may throw an impossible on some platforms.
C500-10 fixed Steeds may move far too often when being ridden.
C500-11 fixed Monsters placed on the map after being off the map may move many times in a row.
C500-12 fixed Recover may not be able to restore games where a crash occurs when swallowed or engulfed.
C500-13 fixed Aklys path shows locations hero cannot see.
C500-14 fixed Engravings may not vanish correctly.
C500-15 fixed It's possible to enter a special region without triggering special effects.
C500-16 fixed Wand of Stasis mis-handles time spent on other levels.
C500-17 fixed Hero can catch items while asleep.
C500-18 fixed Untamed pet may be called "your pet".
C500-19 fixed Failed level write prevents future level writes without notifying the user.
C500-20 fixed No checkpoints are saved until after the first level change after a game is started or restored.
C500-21 fixed After polymorph or revival, monsters do not interact with the terrain until that monster's next move.
(related spoiler bugs)

Windows-only bugs

ID Status Description Additional Info
W500-1 fixed Setting any map_mode option in the config file may prevent the game from starting.
W500-2 fixed An extra keypress may be required to exit the game.
W500-3 fixed Recovery dialogs may not show, leading the user to think the game has locked up.
W500-4 fixed Curses permanent inventory window fails when too wide.
W500-5 fixed Debugging information may be visible.
W500-6 fixed When selecting a save file, invalid options may be available.
W500-7 fixed There is an artificial default limit of 110 columns.
W500-8 fixed hilite_pet is broken on an ASCII map.
W500-9 fixed NetHackW.exe starts incorrectly when the config file has "OPTIONS:windowtype:tty"
W500-10 fixed Command line option -D fails.
W500-11 fixed Menu group accelerator not override item accelerator 0

X11-only bugs

ID Status Description Additional Info
X500-1 fixed Menu windows may be taller than the screen.
X500-2 fixed If user closes inventory window, perm_invent should be turned off.
X500-3 fixed Game crashes when trying to load a font that does not exist.

Macintosh-only bugs

ID Status Description Additional Info
M500-1 fixed Screen may flash during update.

Amiga-only bugs

ID Status Description Additional Info
A500-1 fixed Game may not start successfuly due to too small a stack or a screenmode supporting too few colors. New binaries were released with a fix for this issue.
A500-2 fixed --More-- prompt can get stuck in a loop on a very long word
A500-3 fixed Program may crash while using overview window.
A500-4 fixed Various buffer overflows may crash the game.
A500-5 fixed In the tutorial, a food ration may be placed incorrectly.

Build-from-source issues (all platforms)

ID Status Description Additional Info
S500-1 fixed Some cross-compiling filenames still say "370".
S500-2 fixed Compiling with gcc 16 causes warnings.
S500-3 fixed Multiple issues building libnh.
S500-4 fixed Building WASM may fail.

MS-DOS-only bugs

ID Status Description Additional Info
D500-1 fixed CTRL+arrow keys may not work correctly.
D500-2 fixed Custom colors in VESA BIOS mode may appear incorrectly.
D500-3 fixed Position bar may overlap the map.
D500-4 fixed Tiles may be scaled incorrectly in overview mode.
D500-5 fixed PSF fonts may be generated incorrectly.

Bug Status Key

StateMeaning
OpenThe bug is unresolved, but we know what we need to about it.
Not a bugSometimes people think this is a bug, but they're wrong.
fixed The bug will be fixed in the next release; generally code for the fix is available in our public git repository.
FixedThe bug will be fixed in a future release.
HelpWe don't know what is causing this - if you see it, please send a detailed bug report. Thanks!
SupersededSee another entry for information on this bug.

Bugs lists for previous versions

 3.3.0 bugs list
3.3.0 spoiler bugs list
3.3.1 bugs list
3.3.1 spoiler bugs list
3.4.0 bugs list
3.4.0 spoiler bugs list
3.4.1 bugs list
3.4.1 spoiler bugs list
3.4.2 bugs list
3.4.2 spoiler bugs list
3.4.3 bugs list
3.4.3 spoiler bugs list
3.6.0 bugs list
3.6.0 spoiler bugs list
3.6.1 bugs list
3.6.1 spoiler bugs list
3.6.2 bugs list
3.6.2 spoiler bugs list
3.6.3 bugs list
3.6.3 spoiler bugs list
3.6.4 bugs list
3.6.4 spoiler bugs list
3.6.5 bugs list
3.6.5 spoiler bugs list
3.6.6 bugs list
3.6.6 spoiler bugs list
3.6.7 bugs list
3.6.7 spoiler bugs list