Spring Tool Suite 4中@Value注解配置属性自动补全功能失效

根据Spring官方工具公开的智能代码编辑特性说明，输入@Value("${serv}")时应当触发配置属性补全弹窗。

使用的全新安装STS版本为spring-tool-suite-4-4.12.1.RELEASE-e4.21.0-linux.gtk.x86_64，live hover功能运行正常，但在@Value("${}")内部输入serv字符时，未弹出@Value对应的属性补全弹窗。

相关LSP交互日志如下：

[t=1637037571574] LSP4E to org.eclipse.languageserver.languages.springboot:
Content-Length: 319



[t=1637037571575] LSP4E to org.eclipse.languageserver.languages.springboot:
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"version":50,"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"},"contentChanges":[{"range":{"start":{"line":14,"character":14},"end":{"line":14,"character":14}},"rangeLength":0,"text":"s"}]}}

[t=1637037571575] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","method":"sts/highlight","params":{"doc":{"version":50,"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"},"codeLenses":[]}}

[t=1637037571584] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java","diagnostics":[]}}

[t=1637037572415] LSP4E to org.eclipse.languageserver.languages.springboot:
Content-Length: 189



[t=1637037572415] LSP4E to org.eclipse.languageserver.languages.springboot:
{"jsonrpc":"2.0","id":"35","method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"}}}

[t=1637037572416] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","id":"35","result":[]}

[t=1637037594024] LSP4E to org.eclipse.languageserver.languages.springboot:
Content-Length: 319



[t=1637037594024] LSP4E to org.eclipse.languageserver.languages.springboot:
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"version":51,"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"},"contentChanges":[{"range":{"start":{"line":14,"character":15},"end":{"line":14,"character":15}},"rangeLength":0,"text":"e"}]}}

[t=1637037594025] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","method":"sts/highlight","params":{"doc":{"version":51,"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"},"codeLenses":[]}}

[t=1637037594033] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java","diagnostics":[]}}

[t=1637037594931] LSP4E to org.eclipse.languageserver.languages.springboot:
Content-Length: 189



[t=1637037594931] LSP4E to org.eclipse.languageserver.languages.springboot:
{"jsonrpc":"2.0","id":"36","method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"}}}

[t=1637037594932] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","id":"36","result":[]}

[t=1637037596128] LSP4E to org.eclipse.languageserver.languages.springboot:
Content-Length: 319



[t=1637037596128] LSP4E to org.eclipse.languageserver.languages.springboot:
{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"version":52,"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"},"contentChanges":[{"range":{"start":{"line":14,"character":16},"end":{"line":14,"character":16}},"rangeLength":0,"text":"r"}]}}

[t=1637037596129] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","method":"sts/highlight","params":{"doc":{"version":52,"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"},"codeLenses":[]}}

[t=1637037596137] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java","diagnostics":[]}}

[t=1637037596949] LSP4E to org.eclipse.languageserver.languages.springboot:
Content-Length: 189



[t=1637037596949] LSP4E to org.eclipse.languageserver.languages.springboot:
{"jsonrpc":"2.0","id":"37","method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/k/projects/spring-boot-demo/src/main/java/com/example/demo/HelloController.java"}}}

[t=1637037596950] org.eclipse.languageserver.languages.springboot to LSP4E:
{"jsonrpc":"2.0","id":"37","result":[]}

内容的提问来源于stack exchange，提问作者yejianfengblue