Possibly a bug:
1. Put a multitap delay block (all settings at default) after a bypassed block.
2. Set its envelope follower from OFF to -99.9 dB -> FX output is silenced completely, independent of block input level.
3. Unbypass the block in front -> multitap delay block might output some FX signal again, but I doubt it works truthfully to the -99.9 db setting.
4. Bypass the block in front again -> multitap delay may or may not keep on putting out an FX signal.
5. Switching the envelope follower to OFF restores the FX signal (of course), then setting it back to -99.9 dB again mutes it completely (see point 2).
I can't tell if this behaviour exists before the current beta (8).
I found this using the latest Axe-Edit, but I could reproduce it by operating the front panel with a pre-existing patch and as well with a newly created one. (see attached patch)
FWIW, in my pre-existing patch with lots of blocks, moving the multitap delay around the grid would "reactivate" the FX output at some places in the grid while leaving the envelope follower at the -99.9 dB setting. This is true even if the blocks in front would remain in bypassed state. At other places in the grid (i.e., after other blocks), the FX signal remains muted. Seems to me that the multidelay block's envelope follower reacts wrong after some blocks, after others it works as expected.