The “Wavelet decompose” filter is missing from the “Filters” menu. I’ve tried the 4.4.2, 4.4.8, and the 5-Beta1 appimages on Kubuntu 18.04. Google isn’t helping; hopefully this is just some kind of an appimage limitation.
Hello and welcome to the forum 
Do you mean Filter → Enhance → Wavelet Noise Reducer?
Do you remember a ‘Wavelet Decompose’ filter being available?
There’s ‘Split Details [Wavelets]’ in the G’MIC filter which will decompose an image.
No. I figured it out. Some time between 4.0 and 4.4 it moved from the “Filters” menu to the “Image” menu. Thanks anyway!
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