ZynAddSubFx overlapping / transferring to other samples

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I got a weird problem. When I click the stuff made from zynaddsubfx in lmms and click too fast (sometimes), the effects transfer to the next song and the only way to reset that is if I were to restart the program. Sometimes it doesn't even matter the speed, it does it anyways.

Here's an example: a hollow (reverb of some sort) is applied naturally to a sine wave. I then click another sample made with zynaddsubfx, and then that hollowness transfers over. If I play anything else, even if it's not zynaddsubfx, it transfers over--this basically makes everything sound messed up.

Is this an LMMS problem (not set up right? my buffer size is 256 I think)? Or is it a windows problem? This has been happening to me on every version of LMMS. I'm on 1.0.3 currently. Windows 8.1.

I put up with it for a long time, but I am weary from having to restart LMMS tens of times an hour.
w e i r d.. 8|

If i understand you, the effects added to zasfx presets, will be virtually 'glued' to other instruments ...like if they were 'infected' by the one you chose to pre-hear from the preset-browser?
It is only virtually right? -They do not have the effects for real ... ?
This happens to vsts and zasfx - But not to 3oc right? How about LB303 ?

im really not sure about what going on here
I would however like you to install 1.1, and see if the bug prevail in curret off release.

and please post your:
*lmms sound device chosen (SDL is best for win)
*perhaps a sound-file..
Yes, as though infected. And yes, it's virtual, as though it were loaded into the memory. Please give me a couple days to test it out and record it. I did use SDL, it's RTKVHD64.sys. And I've tried messing with it just now. I mean that I downloaded a new version. It doesn't seem to be happening at this moment, though. But if it does I will come back to this thread (if ever... it may just be a bug) and try to record it. This was only a problem with ZASFx, never with anything else.

Thank you for the help, also, musikbear!