* 🔥🐞**Media** Fixed an issue where lazy-loaded images would disappear when using custom CSS image loading effects.
= 4.5 - Feb 23 2022 =
* 🌱**Page Optimize** Localization is back.
* **Guest** Fixed organic traffic issue as different browsers may fail to set `document.referrer`.
* **Image Optimize** Improved wp_postmeta table compatibility when gathering images. (Thanks to Thomas Stroemme)
* 🐞**Page Optimize** Fixed a potential CSS/JS 404 issue for existing records that have been marked as expired.
* **ESI** `LITESPEED_ESI_OFF` now affects `litespeed_esi_url` API filter too.
* **Guest** Added a check to determine if Guest Mode is blocked by a third-party, and display warning if it is (Ruikai)
* **Guest** To support WP sites with multiple domains, Guest Mode detection URL no longer uses domain.
* **Report** Network now shows Toolbox page when having a large number of subsites.
* **DB Optimize** Reduced default subsites count from 10 to 3 under Network Admin -> DB Optimize page to avoid timeout.
* **Cloud** Fixed potential `lack_of_token` error when requesting domain key for cases where local summary value was not historically included in the array.
* **Cloud** Fixed a PHP fatal error that occurred when encountering a frequency issue under CLI. (Dean Taylor #Issue410)
* **Avatar** Force gravatar cache refresh in browsers and on CDN (rafaucau #PR430)
* **API** New filter `litespeed_purge_ucss` to purge a single page UCSS. (#376681)
* **API** New filter `litespeed_ucss_per_pagetype` for UCSS per page type generation. (Ankit)
* **GUI** Replaced some GUI text and settings with more inclusive language (kebbet #PR437 #PR435)
* **3rd** Excluded `WP Statistics` from inline JS optimize. (Ryan D)
* **3rd** Added API filter `litespeed_3rd_aelia_cookies` for Aelia CurrencySwitcher.
* **Media** Updated image lazyload library to 17.5.0.
