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# v21.4.1

## Bug Fixes

### <img src="https://409486811-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M43RhGzV8Plu0tfknia%2F-Meit2V2w2xsVl9Zs7cc%2F-MejHt_-f99JJy-tYdJz%2Flogo-writeback.png?alt=media&amp;token=9771931a-81aa-450e-b8da-4bcd6b14af37" alt="" data-size="original">Qommentary Writeback

#### \[QOM-857] Number component with type integer allowing decimal places

Fixed a validation issue which allowed decimals to be entered in integer input fields.

#### \[QOM-1090] Checkbox controls saving false values as null

Fixed a data issue which caused Checkbox controls to save unchecked values as null.

### <img src="https://409486811-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M43RhGzV8Plu0tfknia%2F-MejIDVovtymssVD_hyV%2F-MejKodDUM2WcYz-1cf-%2Flogo-engine.png?alt=media&amp;token=a0f34461-51e8-4053-a81e-3286c34acb5d" alt="" data-size="original">Qommentary Engine

#### \[QOM-1091] CORS issue with same origin sites

With the upgrade of .NET Core Hosting bundle to version 3.1.x, Microsoft introduced stricter restrictions which required same-origin sites accessing the Qommentary Engine to be whitelisted. This fix ensures that same-origin sites can establish communication without any CORS issues.