Some SFX are truncated when applying a reverb effect to the audio bus

[nightblade9]

Godot version

v3.5.1.stable.arch_linux

System information

Arch Linux (latest stable kernel)

Issue description

When applying a reverb to SFX, some sounds are truncated - they abruptly end. Lengthening the audio files with silence doesn't seem to resolve the problem.

Steps to reproduce

• Add a new audio bus and add the default reverb effect
• Create an audio player that uses that bus and plays a sound-effect
• Rig up a button to play audio on click

Notice that, with some audio sounds, the SFX is truncated.

With the MVP project, press any of the buttons.

Minimal reproduction project

ReverbBug.zip

[nightblade9]

For one of the SFX (sentineye-hit.wav), I found that truncating the sound in Audacity at the 0.15s mark fixes the problem. I don't know why.

What doesn't fix it:

• Adding silence to the end of the file (as much as 0.2s)
• Truncating anywhere after 0.15s

If anyone knows a work-around for this, I would really appreciate hearing it.