Instruments with distortion & effects muted

[Zaynab-To-A]

Hey, so this is isn't a new bug, but it's not all that old either. I noticed that if you add or change an instruments' effect or distortion with a marker, the affected instrument is basically muted after the effect changes, and it's only audible after it's been played through once. This happens with basically any instrument and effect, and if you add the exact same effect directly on the instrument editor rather than with a marker, this problem doesn't happen; only with markers. The bug isn't fixed by pausing and unpausing or hearing the instrument without an applied marker; it has to play through the edited *and* unedited version of the instrument to be audible, and it's kind of ruined some older songs I've made as well as hampered the amount of effectsand effect changes I can do now.