CEP panel with min size becomes blank when the Illustrator window is resized

Question

Hi, we have developed a CEP extension that interacts with our application called PLM: is a web application running in a standard browser. The .zxp is signed and overall works fine. The extension has a minimum size (600px in height and 400px in width) specified in the manifest.

If the panel is undocked it won't be possible to shrink it under its minimum size as expected.
But when the panel is docked we have experienced an interesting issue: if you resize the main Illustrator window so that the side panel is smaller than the minimum size of the extension, it is blanked out.
Then if you enlarge again the window the PLM extension appears. But if before enlarging you switch between different Adobe panels it won't appear and afterwards you need to change panel again to have it back.
Have you ever had the chance to observe this case? Do you think it is an intended behaviour or is it a bug?

creative explorer · Accepted Answer

@Emanuele33904507jyus I must have a different workflow, because I don't have this issue. Granted, I do have three screens... and I normally work with the panel undocked and floating on my second monitor... my third screen is for other applications or my background music or video....

If it must be docked, the only way to reliably fix the blanking issue is by adding the JavaScript redraw logic to your extension's code.

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