1# ArkWeb Subsystem Changelog
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3## cl.arkweb.1 nestdScroll Behavior Change
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5**Access Level**
6
7Public
8
9**Change Reason**
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11The nested scrolling options of the **\<Web>** component, **scrollForward** and **scrollBackward**,were incorrectly implemented.
12
13**Change Impact**
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15This change is a non-compatible change. You need to change the nested scrolling option in use based on the new implementation.
16
17**API Level**
18
1911
20
21**Change Since**
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23OpenHarmony SDK 4.1.6.5
24
25**Key API/Component Changes**
26
27Before change
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29| Name            | Type              | Description                  |
30| -------------- | ---------------- | -------------------- |
31| scrollForward  | NestedScrollMode | Nested scrolling options when the component scrolls backward.|
32| scrollBackward | NestedScrollMode | Nested scrolling options when the component scrolls forward.|
33
34After change
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36| Name            | Type              | Description                  |
37| -------------- | ---------------- | -------------------- |
38| scrollForward  | NestedScrollMode | Nested scrolling options when the component scrolls forward.|
39| scrollBackward | NestedScrollMode | Nested scrolling options when the component scrolls backward.|
40
41**Adaptation Guide**
42
43For details, see [Implementing Nested Scrolling](../../../application-dev/web/web-nested-scrolling.md).
44