E-book Editor and tabs eating up all the space - Page 2

KevinH · 12-12-2025, 06:53 PM

If you use Sigil and its editor does the exact same thing then you will know it is an OS change in MacOS as I use both Sigil and calibre on my Macs (Sequoia) and do *not* see the issue you report on either one. But Sigil uses Qt 6.9.3 and is built to target MacOS 12 and later, but built with the XCode version from Sequoia, not Tahoe.

No idea which kind MacOS version is targeted by Calibre on MacOS and which SDK/XCode version calibre uses.

theducks · 12-12-2025, 07:33 PM

Quote:

Originally Posted by JSWolf

I did see 8.16.2 as the new version before I installed it. I was running 8.15.0 at the time.

Jon Jon
I did mention IF INSTALLED (16) it will not show.

kovidgoyal · 12-12-2025, 10:42 PM

The next version of calibre will be built with Qt 6.10.1 and trying with that on my Tahoe machine does not show the issue. So you just need to wait for the next release.

slimcat · 07-05-2026, 06:58 PM

Resurrecting this to report the cause & fix (at least for me):

In Preferences > Look & feel, make sure to set User interface style to calibre style, not System default.

That immediately brought back tab scrolling and stopped the window resizing. Not just the shrinking side panels and tabs, but the way the entire Edit Book window expands, apparently without limits (if you keep opening tabs, it will eventually get wider than your display).

fyi: Per the suggestion up thread, I previously tested on Sigil, which doesn't have this problem.

07-05-2026, 06:58 PM	#19
slimcat Enthusiast Posts: 37 Karma: 39964 Join Date: May 2025 Device: Kindle PW, iPad	Fix on Mac for Edit Book tab scrolling/expanding Editor pane Resurrecting this to report the cause & fix (at least for me): In Preferences > Look & feel, make sure to set User interface style to calibre style, not System default. That immediately brought back tab scrolling and stopped the window resizing. Not just the shrinking side panels and tabs, but the way the entire Edit Book window expands, apparently without limits (if you keep opening tabs, it will eventually get wider than your display). fyi: Per the suggestion up thread, I previously tested on Sigil, which doesn't have this problem. Attached Thumbnails

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12-12-2025, 06:53 PM	#16
KevinH Sigil Developer Posts: 9,768 Karma: 7000000 Join Date: Nov 2009 Device: many	If you use Sigil and its editor does the exact same thing then you will know it is an OS change in MacOS as I use both Sigil and calibre on my Macs (Sequoia) and do not see the issue you report on either one. But Sigil uses Qt 6.9.3 and is built to target MacOS 12 and later, but built with the XCode version from Sequoia, not Tahoe. No idea which kind MacOS version is targeted by Calibre on MacOS and which SDK/XCode version calibre uses.

12-12-2025, 10:42 PM	#18
kovidgoyal creator of calibre Posts: 46,363 Karma: 29630884 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The next version of calibre will be built with Qt 6.10.1 and trying with that on my Tahoe machine does not show the issue. So you just need to wait for the next release.