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			 Junior Member 
			
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				Join Date: May 2018 
				
				
				
				Device: tablet 
				
				
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				ebook-viewer not showing TOC (greyed out) for some books
			 
			
			
			Problem: With some (rare, for now) ebooks, the TOC exists but the TOC icon is greyed out in the ebook-viewer side menu, both in windows (win10 64bit calibre) and in linux (arch calibre package), as if the viewer doesn't think it has a table of contents. 
		
	
		
		
		
		
		
		
		
		
		
		
	
	Other tests: ebook-edit sees the TOC (The TOC exists and is not empty when looked at in the TOC editor within ebook-edit). Expected: TOC should show up when viewing the ebook with ebook-viewer, since it shows up correctly in the TOC editor within ebook-edit. I have a link to one of the ebooks, but I don't know if it's permitted to post a temporary link to a book on a filehost, even if it's for bug reporting purposes. Please advise. It's the second book I noticed this with, so it's not a fluke, but it's rare. Maybe something to do with some newer ebook TOC standard? The book is very new. The first book I noticed this with was fairly new too, maybe less than a month ago.  | 
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		#2 | 
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			 creator of calibre 
			
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				Location: Mumbai, India 
				
				
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			Open a bug report and attach your book to it.
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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		#3 | |
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			 null operator (he/him) 
			
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		 Quote: 
	
 The following tells you how to report bugs and attach copyright protected material ==>> https://calibre-ebook.com/bugs BR  | 
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| bug, ebook-viewer, toc | 
            
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