Use a fast setblock clock to teleport (for example) all the fireballs to you:
tp @e[type=Fireball] @p
It's glitchy, the movement is not smooth, and the teleport only happens every ~0.6 second. Same with snowballs, arrows, and wither skulls.
It works fine with non-projectile entities:
tp @e[type=Bat] @p
This video shows the bug:
https://www.youtube.com/watch?v=tcsokZxLYB8
EDIT: Setting the wither skull's velocity with this command is also glitchy (not with Fireballs):
summon WitherSkull ~ ~ ~ {direction:[0.0,1.0,0.0],Motion:[0.0,1.0,0.0]}
Environment
– System Details –
Details:
Minecraft Version: 14w21b
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 630270784 bytes (601 MB) / 836239360 bytes (797 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 99
Launched Version: 14w21b
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 6900 Series GL version 4.1.10600 Compatibility Profile Context, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.
Linked issues
Comments 8
Confirmed in 1.8.2-pre6. Relates to MC-44823.
Is this still an issue in the current Minecraft Snapshot 15w49b or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
Confirmed for 14w21b
also with falling sand
Maybe relates to: MC-48106