Jonas Jenwald 2c779a8fbe [Regression] Prevent breaking errors when opening a new document in the GENERIC viewer (PR 14158 follow-up)
In the GENERIC viewer, e.g. when dragging-and-dropping a new PDF document which automatically opens the outline, there can now be breaking errors in the `{BaseViewer, PDFThumbnailViewer}.#getScrollAhead` methods since there's no visible pages/thumbs during loading; sorry about the breakage!
2021-10-25 14:27:24 +02:00
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