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- Updated the files *dynamsoft.webtwain.initiate.js* and *dynamsoft.webtwain.addon.camera.js* for better performance of mobile document capturing when using Safari on iOS/iPadOS 13+
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### Bug Fixed
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- Updated the file *dynamsoft.webtwain.initiate.js* to resolve a memory leak issue in v17.2.1 on Chrome 98+ when the <ahref="{{site.info}}api/WebTwain_Viewer.html?ver=latest#setviewmode"target="_blank">view mode</a> is set to (-1, -1) or if a <ahref="{{site.info}}api/WebTwain_Viewer.html?ver=latest#createthumbnailviewer"target="_blank">thumbnail viewer</a> is used.
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## 17.2.1 (02/24/2022)
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### Improved Features
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- Made changes to handle <ahref="https://developer.chrome.com/blog/private-network-access-preflight/"target="_blank">CORS preflight requests</a> sent by Chrome from V98. Learn more <ahref="https://www.dynamsoft.com/web-twain/docs/faq/private-network-access-in-chrome101.html"target="_blank">here</a>.
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- For Chromium V84+, use userAgentData instead of userAgent in response to UserAgent String phasing out issue.
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### Bug Fixed
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### Bug Fixes
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- Fixed a bug where Dynamsoft Service installation/uninstallation failed due to the current user account does not match the user account under C:\Users{account}. Learn more <ahref="https://www.dynamsoft.com/web-twain/docs/faq/service-installation-issue.html?ver=latest"target="_blank">here</a>.
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-[HTML5 on MacOS] Fixed a bug where the short key (set by <ahref="{{site.info}}api/Dynamsoft_WebTwainEnv.html#organizationid"target="_blank">organizationID</a>) did not work on macOS 12+.
* Modified DynamicImage.dll(DynamicImagex64.dll) to improve encoding and decoding mode of TIFF files.
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* Updated Barcode Reader library to version 8.6. Check out the release notes for <ahref="https://www.dynamsoft.com/barcode-reader/programming/javascript/release-notes/js-8.html?ver=latest#860-08312021"target="_blank">Barcode Reader JavaScript SDK - 8.6</a>
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### Bug Fixed
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### Bug Fixes
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* Fixed a bug where the image displayed in the thumbnail may be inconsistent with that on the canvas when switching tags through `FilterImageByTag`.
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* Fixed a bug that Dynamic Web TWAIN object could not be initialized when using iframe in Edge.
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