Forward and Backward keys don't work

[bayvista170]

I increased the font size for an epub book. Now the forward and backward keys don't work. Any ideas?

[Nanaky]

Its works when you change the font size back?

[bayvista170]

Yes. But my wife cannot read the smaller font.

[Nanaky]

Have you check if work with the Keyboard arrow keys?

[bayvista170]

Yes. These do not work.

[Nanaky]

Strange. I've just tried and it goes without problems. Have you also check a other eBook?

[bayvista170]

No, but the up and down arrow keys change the page. Thanks

[Nanaky]

In this case used this.