As Christopher Martin has said, if you make a Survival world with cheats enabled, strongholds do spawn. However, if you re-create that same world in survival with cheats off, no strongholds will be present.
The testing I've done has strongholds only spawning in Creative and Survival with cheats, not vanilla Survival. I'd note that this issue needs to be fixed if proper testing of the End is to be done, since bugs can apparently only apply to certain game modes and not every game mode.
Aaron K. Williams
This issue is not resolved.
As Christopher Martin has said, if you make a Survival world with cheats enabled, strongholds do spawn. However, if you re-create that same world in survival with cheats off, no strongholds will be present.
The testing I've done has strongholds only spawning in Creative and Survival with cheats, not vanilla Survival. I'd note that this issue needs to be fixed if proper testing of the End is to be done, since bugs can apparently only apply to certain game modes and not every game mode.