diff --git a/clang-tools-extra/clangd/ClangdLSPServer.h b/clang-tools-extra/clangd/ClangdLSPServer.h
--- a/clang-tools-extra/clangd/ClangdLSPServer.h
+++ b/clang-tools-extra/clangd/ClangdLSPServer.h
@@ -10,6 +10,7 @@
 #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_CLANGDLSPSERVER_H
 
 #include "ClangdServer.h"
+#include "Context.h"
 #include "DraftStore.h"
 #include "Features.inc"
 #include "FindSymbols.h"
@@ -131,6 +132,11 @@
   void publishDiagnostics(const URIForFile &File,
                           std::vector<clangd::Diagnostic> Diagnostics);
 
+  // Since initialization of CDBs and ClangdServer is done lazily, the following
+  // context captures the one used while creating ClangdLSPServer and passes it
+  // to above mentioned object instances to make sure they share the same state.
+  Context BackgroundContext;
+
   /// Used to indicate that the 'shutdown' request was received from the
   /// Language Server client.
   bool ShutdownRequestReceived = false;
diff --git a/clang-tools-extra/clangd/ClangdLSPServer.cpp b/clang-tools-extra/clangd/ClangdLSPServer.cpp
--- a/clang-tools-extra/clangd/ClangdLSPServer.cpp
+++ b/clang-tools-extra/clangd/ClangdLSPServer.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ClangdLSPServer.h"
+#include "Context.h"
 #include "Diagnostics.h"
 #include "DraftStore.h"
 #include "FormattedString.h"
@@ -456,6 +457,11 @@
 
 void ClangdLSPServer::onInitialize(const InitializeParams &Params,
                                    Callback<llvm::json::Value> Reply) {
+  // Switch caller's context with LSPServer's background context. Since we
+  // rather want to propagate information from LSPServer's context into the
+  // Server, CDB, etc.
+  llvm::Optional<WithContext> MainContext;
+  MainContext.emplace(BackgroundContext.clone());
   // Determine character encoding first as it affects constructed ClangdServer.
   if (Params.capabilities.offsetEncoding && !NegotiatedOffsetEncoding) {
     NegotiatedOffsetEncoding = OffsetEncoding::UTF16; // fallback
@@ -577,6 +583,8 @@
         ->insert(
             {"semanticHighlighting",
              llvm::json::Object{{"scopes", buildHighlightScopeLookupTable()}}});
+  // Restore caller's context.
+  MainContext.reset();
   Reply(std::move(Result));
 }
 
@@ -1184,9 +1192,9 @@
     llvm::Optional<Path> CompileCommandsDir, bool UseDirBasedCDB,
     llvm::Optional<OffsetEncoding> ForcedOffsetEncoding,
     const ClangdServer::Options &Opts)
-    : Transp(Transp), MsgHandler(new MessageHandler(*this)),
-      FSProvider(FSProvider), CCOpts(CCOpts),
-      SupportedSymbolKinds(defaultSymbolKinds()),
+    : BackgroundContext(Context::current().clone()), Transp(Transp),
+      MsgHandler(new MessageHandler(*this)), FSProvider(FSProvider),
+      CCOpts(CCOpts), SupportedSymbolKinds(defaultSymbolKinds()),
       SupportedCompletionItemKinds(defaultCompletionItemKinds()),
       UseDirBasedCDB(UseDirBasedCDB),
       CompileCommandsDir(std::move(CompileCommandsDir)), ClangdServerOpts(Opts),