BUG: Calibre 2.0 E-Book Viewer ePub extra space display problem

[trying]

With Calibre 2.0, the E-Book Viewer is displaying an extra space between some words in ePubs when I have the serif font set to Constantia (or Century or Century Schoolbook etc). When set to Times New Roman these extra spaces disappear. Using the editor, I can tell these spaces always occur when things like:

<a id="page_281" class="calibre1"></a>

appear. I speculate that perhaps the viewer is replacing this with a zero-width space character? And that some fonts incorrectly display this as a non-zero width space? I suggest either dropping the zero-width character entirely or at least giving the user an option to drop it.

With Calibre 1.47 these epubs looked fine.

Windows 7 SP1

[kovidgoyal]

https://bugreports.qt-project.org/browse/QTBUG-40912

[trying]

Originally Posted by kovidgoyal

https://bugreports.qt-project.org/browse/QTBUG-40912

I took a look at the bug in QT5 you referenced. I am running on Windows 7 SP1 not linux. My bug also doesn't have anything to do with soft hyphens (that I can tell anyway). Given, however, that QT5 QWebView does have some pretty basic rendering issues, I can certainly see that this is probably another QT5 bug and not a bug in the E-book Viewer.

BTW an extra space is also appearing before (and sometimes after) things like:

<span class="txit">italics</span>

[kovidgoyal]

This bug affects all platforms, not just linux. And if you have hyphenation turned on in the viewer preferences, then it will automatically insert soft hyphens.