Donovan

Just for the record this issue is very much not resolved it was changed to resolved by a mod. The community support discord has been little to no help so far i've brought it up twice and no one responded to me other than people having the same issue.

thanks Mojang! it works now

it has been a couple of days so far and i am mad, if there is any way to revert to an older launcher that would be helpful thank you Mojang

there is something wrong with the launcher update so just vote and pray for it to work

this is really frustrating, but it seems like a bunch a people have the problem so maybe they will fix it soon

Related to strongholds and not bamboo: Superflat structure tags seem to be removed hopefully only temporarily. There is still ways to edit them using import world settings and JSON files, but the JSON files for some reason only allow strongholds to generate if "features" (I think the same as decorations) is set to true in the JSON file. Also, strongholds don't even generate in superflat presets that used to automatically generate them such as overworld and tunneler's dream.

The stronghold generation in superflat seems to be related to the "features" option. When "features" is set to true, strongholds can generate along with grass and flowers and lakes of water and lava (even when "lakes" is set to false which might also be a problem), but when "features" is set to false, you can locate strongholds and eye of ender to them but they are not actually there. It seems to be impossible to create a superflat world with strongholds but no features, and I don't think that should be the case. Other structures can still generate when features is false. With Rajat Patel's JSON file if you only change "features": false, it will not generate strongholds.

Except there are. I listed them. It's a hammer emote and diamonds to you.

Can confirm on `OS X 10.11.6 (15G1212)` MC 1.11.2 (Modded, Major Mods: MCForge, Optifine). Also is still reproducible after switching modifier keys, this can be accomplished by going to `System Preferences -> Keyboard -> Modifier Keys` and swapping the `Command Key` with another modifier key.

==EDIT==
After looking at Minecraft's source code (through the minecraft forge sdk) I have determined this: This is most likely a problem with LWJGL 2 or OSX, I do not know if updating to LWJGL 3 will fix this problem. The way that minecraft handles stuff like `Ctrl/Cmd + a` is as follows: Minecraft queries LWJGL to determine if the 'a' key is pressed, then it ensures that the 'Shift' and 'Alt' keys are not pressed, then it checks if the 'Ctrl/Cmd` key is pressed this is done by checking the keycodes `219` (L_META/L_CMD) and `220` (R_META/R_CMD) if minecraft is running on OSX, on Windows it checks for keycodes `29` (L_CTRL) and `157` (R_CTRL). Minecraft does all of these checks by using the method `org.lwjgl.input.Keyboard#isKeyDown(int)`. LWJGL 3 uses GLFW for keyboard input and I have not found any issues reporting the same problem on there github issue tracker. This possibly could be fixed by updating to LWJGL 3 or it could be an internal problem with OSX, this is not a problem with Java since all keyboard handling in both LWJGL 2 and GLFW is done natively (with C/C++ code).

==EDIT 2==
People have mentioned reproducibility on Linux so this is most likely a problem with LWJGL2. Possibly the Unix Kernel but OSX has modified the Kernel enough that it is probably not the case.

Alright Sir. Sorry for the Inconvenience and for wasting some of your time. I hope this Post did not bother you too much. But if it did, I'm sorry.

Can't they make a Bug reporter for Mojang Accounts? It'd help a lot because they need to Update that Support Center

The Mojang Support Center isn't Able to Help me with this Problem Ezfe. You must Understand this Right?