1e41f4b71Sopenharmony_ci# ArkWeb Subsystem Changelog
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3e41f4b71Sopenharmony_ci## cl.arkweb.1 nestdScroll Behavior Change
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5e41f4b71Sopenharmony_ci**Access Level**
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7e41f4b71Sopenharmony_ciPublic
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9e41f4b71Sopenharmony_ci**Change Reason**
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11e41f4b71Sopenharmony_ciThe nested scrolling options of the **\<Web>** component, **scrollForward** and **scrollBackward**,were incorrectly implemented.
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13e41f4b71Sopenharmony_ci**Change Impact**
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15e41f4b71Sopenharmony_ciThis change is a non-compatible change. You need to change the nested scrolling option in use based on the new implementation.
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17e41f4b71Sopenharmony_ci**API Level**
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21e41f4b71Sopenharmony_ci**Change Since**
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23e41f4b71Sopenharmony_ciOpenHarmony SDK 4.1.6.5
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25e41f4b71Sopenharmony_ci**Key API/Component Changes**
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27e41f4b71Sopenharmony_ciBefore change
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29e41f4b71Sopenharmony_ci| Name            | Type              | Description                  |
30e41f4b71Sopenharmony_ci| -------------- | ---------------- | -------------------- |
31e41f4b71Sopenharmony_ci| scrollForward  | NestedScrollMode | Nested scrolling options when the component scrolls backward.|
32e41f4b71Sopenharmony_ci| scrollBackward | NestedScrollMode | Nested scrolling options when the component scrolls forward.|
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34e41f4b71Sopenharmony_ciAfter change
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36e41f4b71Sopenharmony_ci| Name            | Type              | Description                  |
37e41f4b71Sopenharmony_ci| -------------- | ---------------- | -------------------- |
38e41f4b71Sopenharmony_ci| scrollForward  | NestedScrollMode | Nested scrolling options when the component scrolls forward.|
39e41f4b71Sopenharmony_ci| scrollBackward | NestedScrollMode | Nested scrolling options when the component scrolls backward.|
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41e41f4b71Sopenharmony_ci**Adaptation Guide**
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43e41f4b71Sopenharmony_ciFor details, see [Implementing Nested Scrolling](../../../application-dev/web/web-nested-scrolling.md).
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