[w4tchdoge]

Same issue here. From what I've noticed it only seems to be a problem with fonts that have a font-weight that isn't 400/normal (Bold, Semi-Bold, Light, Extra-Light, etc)

I'm on Calibre version 8.0.0

System Information:

Spoiler:

OS Name : Microsoft Windows 11 Home Single Language
Version : 10.0.22631 Build 22631
System Manufacturer : Micro-Star International Co., Ltd.
System Model : Katana A15 AI B8VF
System Type : x64-based PC
Processor : AMD Ryzen 9 8945HS w/ Radeon 780M Graphics, 4001 Mhz, 8 Core(s), 16 Logical Processor(s)
BIOS Version/Date : American Megatrends International, LLC. E158NAMS.509, 2024-03-13
SMBIOS Version : 3.5
Embedded Controller Version : 255.255
BIOS Mode : UEFI
BaseBoard Manufacturer : Micro-Star International Co., Ltd.
BaseBoard Product : MS-158N
BaseBoard Version : REV:1.0
Platform Role : Mobile