any ideas what the problem could be? Only been happening for the past 3-4 weeks

A monitor volume is absolutely necessary when editing in the waveform editor. No one whishes to fancy with hardware control volumes, nor change the audiofile level to adjust listening level.
Adding a little monitor volume setting in dB. the Levels pannel is no harm and would protect users ears from overloads.

It would be extremely helpful to have a preview function available on mix-paste! As it stands now, you have to complete the mix-paste to hear how it sounds, instead of previewing it to make sure you have the correct location and levels. Also, the ability to move the mix-paste position while in the mix-paste window would be extremely helpful as well!

A function that inserts clipboard contents into a clip instead of overwriting existing content. I realize this might be a duplicate entry but it seems your customers have been asking for this feature for a LONG time and yet no priority is placed on it. So to hopefully make the thorn in the proverbial shoe bigger...

fade out square at top right sometimes doesn't appear on mixdown (waveform editor)

When I save a 16-bit wav file (mine happens to be 8 ch), if I click on the sample type options, and Dithering: Disabled, if I close and open the file again I notice noise in the silence portions of my file where it was identically 0 before.

If I do the same, but select Dithering: Enabled, the silence portions are identically 0.

It seems that the Dithering switch is flipped.

Bug: can't drag individual samples or right-click to enter value like in previous versions.

RE: CASE NUMBERADB-3289363-G4Q9E

Unexpected Waveform Behavior. After recording for about three minutes the Waveform no longer shows (which makes it impossible to edit!).
These are random occurrences but when it does happen I have to begin another WAV file and continue recording. Mayur, senior Adobe Advisor, had me reinstall Adobe 2017 and the waveform reappeared. Then after closing Adobe CC 2018 and reopening the file the Waveform image magically reappeared! Tis' a puzzlement.

Hi. I can't see my WAV file. I can hear it. I can see the spectral display reading of my file. But nothing appears in the wav timeline.

In the “Audio Channel Mapping” preferences, allow “File Channel 3 [C]” to be mapped to both left and right outputs so that mono (“center”) channels can be heard through both outputs while playing back in the Waveform Editor. This behavior seems to happen automatically when using the built-in speakers as the Default Output, but changing the Default Output hardware breaks it. The result is that the user is forced to listen to mono signals through either the left or right output, but not both.

In the Noise Reduction effect, in order to save a Noise Print, I have to save twice. Currently, saving once does not save the captured Noise Print, and I have lost prints several times because of this bug. Please fix this; thank you.

The waveform viewer supports syncing the zoom between files. But only the horizontal (time) zoom is synced. Can the ability to sync the vertical (level) axis as well be brought back? This used to just work but looks like support was removed at some point. It can be very frustrating when trying to compare two files and zooming in for the details.

In the waveform editor, when zooming in all the way until one can see individual samples, it used to be possible to view the actual sample value. This seems essential for a technical tool. But the support for this was removed from Audition at some point. Please bring it back!

See above. The idea is I'd like to know which specific preset I"ve applied, as some of mine are subtly different enough or simply subtle enough that it would be nice to be able to see what I did.

User should have the option to (1) close an instantiated plugin/effect/chain instance after applying (this is the current behavior). Or, (2) allow the instantiated plugin/effect/chain to remain active after applying. This would free the user from the need to constantly re-instantiate. One case example would be the use of an EQ instance to apply a surgical high-pass filter to "spot process" consistent plosives throughout a recorded piece. Bypassing the plugin/effect/chain after it's applied without physicilly closing it establishes easy (future) accessibility.

I would like to have the option to toggle the visibility of the Waveform Editor Grid. This feature was available in legacy versions of Audition.