I'm missing some hwmon kernel modules on my 15.3-machine. Used to work on 15.2:

15.2:
---
$ cat /proc/version 
Linux version 5.3.18-lp152.78-default (geeko@buildhost) (gcc version 7.5.0
(SUSE Linux)) #1 SMP Tue Jun 1 14:53:21 UTC 2021 (556d823)

$ cat /etc/os-release 
NAME="openSUSE Leap"
VERSION="15.2"
[...]

$ modinfo it87
filename:      
/lib/modules/5.3.18-lp152.78-default/kernel/drivers/hwmon/it87.ko
license:        GPL
description:    IT8705F/IT871xF/IT872xF hardware monitoring driver
[...]

$ zcat /proc/config.gz | grep -i it87
CONFIG_GPIO_IT87=m
CONFIG_SENSORS_IT87=m
CONFIG_IT8712F_WDT=m
CONFIG_IT87_WDT=m
---

15.3:
---
$ cat /proc/version 
Linux version 5.3.18-59.5-preempt (geeko@buildhost) (gcc version 7.5.0 (SUSE
Linux)) #1 SMP PREEMPT Wed Jun 2 08:21:36 UTC 2021 (eaf040d)

$ cat /etc/os-release 
NAME="openSUSE Leap"
VERSION="15.3"
[...]

$ modinfo it87
modinfo: ERROR: Module it87 not found.

$ zcat /proc/config.gz | grep -i it87
CONFIG_GPIO_IT87=m
CONFIG_SENSORS_IT87=m
CONFIG_IT8712F_WDT=m
CONFIG_IT87_WDT=m
---