AP redraw issue

[Subclavius]

Affinity Photo 1.7.0.284/Windows 10 64 bit

Am having problems with AF redraw after simple changes e.g. adjusting a curve (consistent with certain files) or making a layer invisible and then visible (intermittent, again only with certain files).  I have attached 2 pics - the first shows the setup before and the second shows what happens when the curve in question is adjusted.  The only (simple) way to get back to a picture again is to click on the visibility icon of the composite channel to force a redraw.

With the selected file (and another that I have) the fault is reproducible but it doesn't occur for all files. The only consistency I can find with files that cause the fault is that they are large 16bit greyscale file with 2 groups. I haven't got this to happen - so far - with only 1 group.  I don't know if this is the same fault as thread 78221 (strange redraw issues).

Any help would be appreciated.  I can upload the file if required.

Nigel

[Edited to correct title]

[Chris B]

Hi Subclavius,

I'm struggling to reproduce this from scratch so if you could upload the file to this private Dropbox folder I'd appreciate it  

[Subclavius]

File has now been uploaded ... fingers crossed (that you can reproduce the fault)

Nigel

[Chris B]

Thanks Nigel.

I can see exactly what you mean with the file you uploaded. I'm going to see if I can simplify the document/recipe and pass it to dev.

Update - I just opened it on my iMac and I got the checkerboard flash up for a second and then the document rendered correctly. I then went back to Windows and adjusted the curve, but this time I hid the High Pass Live Filter and the document rendered itself correctly.

[Subclavius]

Hi Chris B

Thanks for the update. I shall bear it mind when editing.

Nigel