Here is a patch sending the same signal to spat5.reverb~ @channels 6 and to spat5.reverb~ @channels 8. After 10 seconds, spat5.reverb~ @channels 6 goes to feedback, whereas spat5.reverb~ @channels 8 sounds normal.
I am using spat 5.1.5, Max 8.1.1 and macOS 10.14.6
Nicolas
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