Bad handling of multitouch in Physics activity

[llaske]

In Physics activity on touch devices, when creating a new item with one finger then using another finger, a new item is created but the first one is stick in the air at its original position.
The only action possible on the first one is now to remove it.

See in action below:

[dikwickley]

hello, @llaske I tested it out and the bug still persists.
what I suggest is disabling the start of another touch while a new item is being created.
I would like to work on this issue, can you assign it to me?

[llaske]

Hi @dikwickley, You're welcome. Sounds like a good idea.
We're not assigned issue, see here for a contributor guide.

[llaske]

Fixed in #1173