diff --git a/tracker/tracker/CHANGELOG.md b/tracker/tracker/CHANGELOG.md
index 7b6b07c26..c291f39d8 100644
--- a/tracker/tracker/CHANGELOG.md
+++ b/tracker/tracker/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 - drop computing ts digits
 - drop logLevel for "! node is already observed" message (not critical)
+- prevent crashes on buffer upload if msg value is wrapped in proxy via other frameworks
 
 ## 16.0.0
 
diff --git a/tracker/tracker/src/main/app/index.ts b/tracker/tracker/src/main/app/index.ts
index e551d5d6b..a016bab2e 100644
--- a/tracker/tracker/src/main/app/index.ts
+++ b/tracker/tracker/src/main/app/index.ts
@@ -1652,14 +1652,14 @@ export default class App {
         try {
           const messagesBatch = buffer.splice(0, endIndex)
 
-          // Cast out the proxy object to a regular array.
+          // Cast out potential proxy objects (produced from vue.js deep reactivity, for example) to a regular array.
           this.postToWorker(messagesBatch.map((x) => [...x]))
 
           res(null)
-      } catch (e) {
+        } catch (e) {
           this._debug('flushBuffer', e)
-          reject(e)
-      }
+          reject(new Error('flushBuffer failed'))
+        }
       })
     })
   }