[jackie_w]

Originally Posted by GeoffR

One problem I've found so far is the text on the book details page has very narrow line spacing, and this causes the same problems that narrow line spacing causes in the KePub reader, i.e. the page breaking in the middle of a line. (see the bottom line in the attached screenshot.)

In case it helps, the Kobo synopsis display is controlled by this css stream in the nickel file

Spoiler:

/* found: 79 (nozlib) pos: 4bcd2e */
* {
  font-family: Georgia;
}
*[qApp_localeName="ja_JP"] {
  font-family: Sans-SerifJP, sans-serif;
  font-style: normal;
}
body {
  line-height: 1.5em;
  margin: 0px;
  padding: 0px;
}
body[qApp_deviceIsTrilogy="true"] {
  font-size: 19px;
}
body[qApp_deviceIsPhoenix="true"] {
  font-size: 23px;
}
body[qApp_deviceIsDragon="true"] {
  font-size: 29px;
}
body[qApp_deviceIsAlyssum="true"] {
  font-size: 32px;
}
body[qApp_deviceIsDaylight="true"] {
  font-size: 37px;
}
body[qApp_deviceIsTrilogy="true"] {
  line-height: 1.25em;
}
body[qApp_deviceIsPhoenix="true"] {
  line-height: 1em;
}

If the original Glo is considered to be 'deviceIsPhoenix' then it may be the last line which is causing your problem. As this is one of the few nickel css streams which is not compressed you could probably quite easily create a patch to suit your requirements. For instance, I've custom patched my currently used devices (H2O, GloHD, AuraOne) to display the synopsis as sans-serif, full-justified with line-height 1.3.