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diff --git a/packages/tailwindcss-language-service/src/completionProvider.ts b/packages/tailwindcss-language-service/src/completionProvider.ts
index a6dce524847eebe96c6ca97ec59c4ed37d33dd90..62ab9e5abe501090663fe01f3aaf7b7fc9745f45 100644
--- a/packages/tailwindcss-language-service/src/completionProvider.ts
+++ b/packages/tailwindcss-language-service/src/completionProvider.ts
@@ -499,8 +499,8 @@
   const positionOffset = document.offsetAt(position)
 
   const searchRange: Range = {
-    start: document.positionAt(Math.max(0, positionOffset - 1000)),
-    end: document.positionAt(positionOffset + 1000),
+    start: document.positionAt(0),
+    end: document.positionAt(positionOffset + 2000),
   }
 
   let str = document.getText(searchRange)

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diff --git a/packages/tailwindcss-language-service/src/util/find.ts b/packages/tailwindcss-language-service/src/util/find.ts
index cf32f66b550f0c3e1f1df62db3ea1a23cca97c29..39120aafb7103064ecd37cce718cbb04508590b6 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -135,7 +135,7 @@   const regexes = settings.tailwindCSS.experimental.classRegex
 
   if (!Array.isArray(regexes) || regexes.length === 0) return []
 
-  const text = doc.getText(range)
+  const text = doc.getText(range ? { ...range, start: doc.positionAt(0) } : undefined)
   const result: DocumentClassList[] = []
 
   for (let i = 0; i < regexes.length; i++) {