UPDATE: As of further investigation I have found this works for all 'Press-and-Hold' keys, such as WASD and LShift.
When you jump and fullscreen at the same time, you start constantly jumping; and move as well, if a movement key was pressed. If you enter chat mode, jump, or press escape, it stops. Moving and looking around does not change the situation, apart from forward movement changing to up and down when you walk around. I have tried this on 2 accounts, 2 computers and 2 operating systems. A video is attached which show the screen and keyboard (So you know I'm not pressing space). It works in singleplayer and multiplayer and in creative, only seems to work when jumping off a elevated section, otherwise it just travels forward. You can see the jumping in third person and you can see others also jumping. I don't have enough computers to test other operating systems but the problem is on Windows 8.1 and Windows 7.
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It does indeed still affect the current version. I have updated the version
info on the page.
On Sun, Dec 21, 2014 at 10:29 PM, [Mod] Galaxy_2Alex (JIRA) <[email protected]
> wrote:
> [Mod] Galaxy_2Alex
> <https://bugs.mojang.com/secure/ViewProfile.jspa?name=galaxy_2alex>
> resolved an issue as Awaiting Response
>
> Is this still a concern in the current Minecraft version? If so, please *update
> the affected versions* in order to best aid Mojang ensuring bugs are
> still valid in the latest releases/pre-releases. If this has been done, we
> can reopen the issue.
>
> Keep in mind that the "Resolved"-Status on this ticket just means
> "Answered", and that we are waiting for further information on whether this
> issue still exists or not. We will reopen it as soon as the requested
> information has been delivered.
> Minecraft <https://bugs.mojang.com/browse/MC> / [image: Bug]
> <https://bugs.mojang.com/browse/MC-58198> MC-58198
> <https://bugs.mojang.com/browse/MC-58198> Constant Jumping Bug
> <https://bugs.mojang.com/browse/MC-58198> Change By: [Mod]
> Galaxy_2Alex
> <https://bugs.mojang.com/secure/ViewProfile.jspa?name=galaxy_2alex>
> Resolution: Awaiting Response Status: Open Resolved [image:
> Add Comment] <https://bugs.mojang.com/browse/MC-58198#add-comment> Add
> Comment <https://bugs.mojang.com/browse/MC-58198#add-comment>
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–
Liam
Sent from my TARDIS
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.