| Multi-language runtime subsystem| Verification enhanced | [New alarms are added and existing alarms are enhanced along with the upgrade from LLVM 12 to LLVM 15](changelogs-arkcompiler.md)|
| Multi-language runtime subsystem| Verification enhanced | [New alarms are added and existing alarms are enhanced along with the upgrade from LLVM 12 to LLVM 15](changelogs-arkcompiler.md)|
| Multi-language runtime subsystem| Verification enhanced | [LLVM emu-tls is changed. If you use both LLVM 12 and LLVM 15, the emu-tls symbol cannot be found in libc++.so.](changelogs-arkcompiler.md)|
| Multi-language runtime subsystem| Verification enhanced | [LLVM emu-tls is changed. If you use both LLVM 12 and LLVM 15, the emu-tls symbol cannot be found in libc++.so.](changelogs-arkcompiler.md)|
| Multi-language runtime subsystem| Verification enhanced | [New features and internal interface changes in the official release of LLVM 15 are inherited.](changelogs-arkcompiler.md)|
| Multi-language runtime subsystem| Verification enhanced | [New features and internal interface changes in the official release of LLVM 15 are inherited.](changelogs-arkcompiler.md)|
| ArkUI | Default value changed | [The default state of the scrollbar in the \<List> and \<Gird> components is changed.](changelogs-arkui.md) |
| ArkUI | UX changed | [The hover effect of the \<Button> component is changed from scale-up by 100% to 105% to overlay of 0% to 5% opacity.](changelogs-arkui.md)|
| ArkUI | UX changed | [The alignment mode of multi-line text in toasts is changed from center-aligned to left-aligned.](changelogs-arkui.md)|
| Bundle management subsystem | Mechanism changed | [The HAP is no longer decompressed during HAP installation.](changelogs-bundlemanager.md)|
| Bundle management subsystem | Mechanism changed | [The HAP is no longer decompressed during HAP installation.](changelogs-bundlemanager.md)|
| Web | Input parameter added | [The input parameter type Resource is added for the setResponseData API.](changelogs-web.md) |
| Resource scheduler subsystem | Behavior changed | [The reminder agent allows you to customize buttons for system applications. Clicking a custom button will redirect you to the specified application page.](changelogs-resourceschedule.md)|
| Resource scheduler subsystem | Behavior changed | [The reminder agent allows you to customize buttons for system applications. Clicking a custom button will redirect you to the specified application page.](changelogs-resourceschedule.md)|
Fixed the issue where child components in the [\<Stack>](../../../application-dev/reference/arkui-ts/ts-container-stack.md) container does not follow the **alignContent** settings when the child components stretch beyond the container.
Before: Child components are not arranged based on **alignContent:Alignment.TopEnd**.

After: Child components are arranged based on **alignContent:Alignment.TopEnd**.

**Change Impact**
1. When the **\<Stack>** component contains a child component larger than itself, adaptation to the application is required.
2. The previous workaround – **Offset** and **translate** settings for the child component – must be removed.
**Adaptation Guide**
Remove the **Offset** and **translate** settings for the child component.
## cl.arkui.3 Change in the \<Button> Component Hover Effect
Changed the hover effect of the **\<Button>** component from scale-up by 100% to 105% to overlay of 0% to 5% opacity. Changed the pressed effect of the component to overlay of 5% to 10% opacity.
**Change Impact**
The visual effect of the **\<Button>** is affected.
Compared with earlier versions, OpenHarmony 4.0.7.3 has the following API changes in its web subsystem:
## cl.web.1 New Input Parameter Type of the setResponseData API
Added the input parameter type **Resource** for the **setResponseData** API.
**Change Impact**
In the scenario where a HAP file is not decompressed, the file path in the HAP does not exist. Under this scenario, to access resources in the HAP file, you must use the input parameter **data:Resource** instead of **data:number**.
**Key API/Component Changes**
- Involved APIs:
setResponseData
- Before change:
```
setResponseData(data: string | number)
```
- After change:
```
setResponseData(data: string | number | Resource)
```
**Adaptation Guide**
When a HAP file is decompressed, open the hold the FD of the target resource file, and then transfer the resource response data to the kernel through **setResponseData(data:number)**.
```
// xxx.ets
import web_webview from '@ohos.web.webview'
import fileio from '@ohos.fileio';
@Entry
@Component
struct WebComponent {
controller: web_webview.WebviewController = new web_webview.WebviewController()
responseweb: WebResourceResponse = new WebResourceResponse()
// '/xxx/.../test.html' is the local path of the file.
// @ts-ignore
let fd = fileio.openSync('/xxx/.../test.html', 0o102, 0o666)
this.responseweb.setResponseData(fd)
//// fd scheme --end
return this.responseweb
})
}
}
}
```
When a HAP file is decompressed, the file path in the HAP does not exist. In this case, transfer the resource response data to the kernel through **setResponseData(data:Resource)**.
```
// xxx.ets
import web_webview from '@ohos.web.webview'
@Entry
@Component
struct WebComponent {
controller: web_webview.WebviewController = new web_webview.WebviewController()
responseweb: WebResourceResponse = new WebResourceResponse()