Statement on host compatibility
We approach host quirks, bugs, AUv3 noncompliances of various severity in a pragmatic and flexible way, sometimes even allowing them to influence the design of our plugins. This is in our best interest if we intend to provide the best value to all our customers.
Ultimately there are limits to this approach, and sometimes we have to take the position of not creating a workaround for a particular host issue of a given manufacturer. Such a decision is only made after no alternative had been found that did not bring a serious detriment to the user experience or the core design of the product - it can thus remain intact for all the other hosts, while steps can be taken to elicit a fix from the host's developer.
No output when the Active switch is turned off
This can occur if send mode is enabled, but the plugin was added as an insert effect. In send mode, the plugin doesn't pass through the input signal to its output.
Turn off send mode
Visualization not working as expected in send mode
Due to the particular nature of processing, correct visualization and analysis requires both dry and wet signals. In send mode, mixing happens outside the plugin, so it has no access to the dry signal (which is distinct from the input signal for send effects). Consideration was given to displaying an approximation or a "best effort guess", but such an approach is deemed misleading and not suitable for a production environment.
Group / bus channels (as supported by some iOS DAW's) may be a suitable solution, if interactive visualization is a must while processing multiple tracks with a single plugin instance. In such a setup, the plugin is added as an insert effect to an aggregate channel.
Send mode, Active switches are not saved and restored
This is a symptom of the host erroneously using the user preset save/restore mechanism when saving/loading the project file, instead of the designated document state management functions provided by AUv3.
Many hosts provide bypass mechanisms, which you can use instead of the active switch (although a major multitrack host has quirks around send effect bypasses for example - so be mindful of possible differences). As for the send mode switch, it depends on the host whether a practical workaround exists (group / bus channels), or you will have to fall back to using individual insert effect instances (in which case unfortunately there is no practical way to sync the parameters of all the instances in real-time).
If you have bugs to report, have any questions or feedback or would like to suggest a feature you'd like to see, don't hesitate to contact us at: