[Google Pixel 8 Pro] badabing2003:
@fma388

You started with Feb release, on slot A

Selected Device on 2024-03-08 16:03:00:
Device ID: REDACTED
Device Model: husky
Device Active Slot: a
Device Mode: adb
Device: REDACTED 8 Pro
Device First API Level: 34
Device Version End Date: October 2026
Device Secuity Update End Date: October 2030
Has init_boot partition: True
Device Bootloader Version: ripcurrent-14.1-11208047
Device is Rooted: True
Device Build: UQ1A.240205.004
Device API Level: 34
Android Version: 14
Android Name: Android 14
Android Codename: Upside Down Cake
Android Release Date: Q3 2023
Android Latest Update: Present
Device Architecture: arm64-v8a
Device Kernel: Linux localhost 5.15.110-android14-11-gcc48824eebe8-ab10865596 #1 SMP PREEMPT Tue Sep 26 19:57:58 UTC 2023 aarch64 Toybox
Device Kernel Version: 5.15
Device KMI: 5.15.110-android14
sys_oem_unlock_allowed: 1
ro.boot.flash.locked: 1
ro.boot.vbmeta.device_state: locked
ro.product.first_api_level: 34
ro.boot.veritymode: enforcing
ro.boot.verifiedbootstate: green
ro.secure: 1
ro.zygote: zygote64
ro.vendor.product.cpu.abilist: arm64-v8a
ro.vendor.product.cpu.abilist32:
vbmeta type: ab
Slot A Verity: Enabled
Slot A Verification: Enabled
Slot B Verity: Enabled
Slot B Verification: Enabled
Magisk Manager Version: R65962366-kitsune:26404
Magisk Path: /data/app/~~SU-__ncDeRbATaO0K8cg1w==/io.github.huskydg.magisk-97bDOL1Px0ePsJq03-VMSQ==/base.apk
Checked for Package: io.github.huskydg.magisk
Magisk Version: R65962366-kitsune:26404
Magisk Config SHA1: 9a4d04d27754a57db8f64970e6bc1355178be54a
Magisk Modules:
Systemless Hosts enabled 1.0
Music ReVanced Extended enabled v6.33.52 [Update Available]
Play Integrity Fix enabled v15.1 [Update Available]
Twitter ReVanced enabled v10.26.0-release.0
YouTube ReVanced Extended enabled v19.02.39
Zygisk - Sui enabled v13.5.1
Zygisk - LSPosed enabled v1.9.2 (7024)
Shamiko enabled v0.7.5 (194) [Update Available]

Flashed the March patched update and it loaded to system on slot B as expected.

Selected Device on 2024-03-08 16:16:48:
Device ID: REDACTED
Device Model: husky
Device Active Slot: b
Device Mode: adb
Device: REDACTED 8 Pro
Device First API Level: 34
Device Version End Date: October 2026
Device Secuity Update End Date: October 2030
Has init_boot partition: True
Device Bootloader Version: ripcurrent-14.4-11322024
Device is Rooted: True
Device Build: AP1A.240305.019.A1
Device API Level: 34
Android Version: 14
Android Name: Android 14
Android Codename: Upside Down Cake
Android Release Date: Q3 2023
Android Latest Update: Present
Device Architecture: arm64-v8a
Device Kernel: Linux localhost 5.15.131-android14-11-gd99d9fe08e0c-ab11209359 #1 SMP PREEMPT Tue Dec 12 17:18:56 UTC 2023 aarch64 Toybox
Device Kernel Version: 5.15
Device KMI: 5.15.131-android14
sys_oem_unlock_allowed:
ro.boot.flash.locked: 0
ro.boot.vbmeta.device_state: unlocked
ro.product.first_api_level: 34
ro.boot.veritymode: enforcing
ro.boot.verifiedbootstate: orange
ro.secure: 1
ro.zygote: zygote64
ro.vendor.product.cpu.abilist: arm64-v8a
ro.vendor.product.cpu.abilist32:
vbmeta type: ab
Slot A Verity: Enabled
Slot A Verification: Enabled
Slot B Verity: Enabled
Slot B Verification: Enabled
Magisk Manager Version: :
Magisk Path: None
Checked for Package: io.github.huskydg.magisk
Magisk Version: R65962366-kitsune:26404
Magisk Config SHA1: a06ee98ef5ad217934382f8c875dbebbb4ad6853
Magisk Modules:
Systemless Hosts enabled 1.0
Music ReVanced Extended enabled v6.33.52 [Update Available]
Play Integrity Fix enabled v15.1 [Update Available]
Twitter ReVanced enabled v10.26.0-release.0
YouTube ReVanced Extended enabled v19.02.39
Zygisk - Sui enabled v13.5.1
Zygisk - LSPosed enabled v1.9.2 (7024)
Shamiko enabled v0.7.5 (194) [Update Available]

That was probably due to

Play Integrity Fix enabled v15.1 [Update Available]
Zygisk - LSPosed enabled v1.9.2 (7024)
Shamiko enabled v0.7.5 (194) [Update Available]

and the print you were using,

You can only switch slots and expect it to work if you flash the same exact OTA on both slots,

At this point you still had Feb on slot A.

Hence you could only boot to B

Then you tried to flash Feb OTA again and got this error (expected)

==============================================================================
2024-03-08 18:31:58 User initiated Flash Pixel Phone.
==============================================================================
Checking OTA version against the currently installed firmware.
Firmware ID: husky-ota-uq1a.240205.004
Currently installed firmware: AP1A.240305.019.A1
OTA date: 240205
Current firmware date: 240305

2024-03-08 18:31:58 ERROR: You can only sidload OTA that is equal or higher than the currently installed version.

Just flash March OTA again and you should be fine.

As for Play store hanging,

Disable those modules and reboot, if the problem goes away, you know what you have to update / fix.