diff --git a/src/scripting_api/field.js b/src/scripting_api/field.js
index bdb2add5f..59501b912 100644
--- a/src/scripting_api/field.js
+++ b/src/scripting_api/field.js
@@ -80,7 +80,7 @@ class Field extends PDFObject {
     this._page = data.page || 0;
     this._strokeColor = data.strokeColor || ["G", 0];
     this._textColor = data.textColor || ["G", 0];
-    this._value = data.value || "";
+    this._value = null;
     this._kidIds = data.kidIds || null;
     this._fieldType = getFieldType(this._actions);
     this._siblings = data.siblings || null;
@@ -88,6 +88,9 @@ class Field extends PDFObject {
 
     this._globalEval = data.globalEval;
     this._appObjects = data.appObjects;
+
+    // The value is set depending on the field type.
+    this.value = data.value || "";
   }
 
   get currentValueIndices() {
@@ -243,12 +246,13 @@ class Field extends PDFObject {
       this._value = "";
     } else if (typeof value === "string") {
       switch (this._fieldType) {
+        case FieldType.none:
+          this._value = !isNaN(value) ? parseFloat(value) : value;
+          break;
         case FieldType.number:
         case FieldType.percent:
-          value = parseFloat(value);
-          if (!isNaN(value)) {
-            this._value = value;
-          }
+          const number = parseFloat(value);
+          this._value = !isNaN(number) ? number : 0;
           break;
         default:
           this._value = value;
@@ -563,6 +567,9 @@ class RadioButtonField extends Field {
         this._id = radioData.id;
       }
     }
+
+    this._hasBeenInitialized = true;
+    this._value = data.value || "";
   }
 
   get value() {
@@ -570,6 +577,10 @@ class RadioButtonField extends Field {
   }
 
   set value(value) {
+    if (!this._hasBeenInitialized) {
+      return;
+    }
+
     if (value === null || value === undefined) {
       this._value = "";
     }
diff --git a/src/scripting_api/util.js b/src/scripting_api/util.js
index 262c1f0aa..8496683e3 100644
--- a/src/scripting_api/util.js
+++ b/src/scripting_api/util.js
@@ -297,6 +297,7 @@ class Util extends PDFObject {
 
   printx(cFormat, cSource) {
     // case
+    cSource = (cSource ?? "").toString();
     const handlers = [x => x, x => x.toUpperCase(), x => x.toLowerCase()];
     const buf = [];
     let i = 0;
diff --git a/test/integration/scripting_spec.js b/test/integration/scripting_spec.js
index 64467f644..81afb33d7 100644
--- a/test/integration/scripting_spec.js
+++ b/test/integration/scripting_spec.js
@@ -1562,4 +1562,40 @@ describe("Interaction", () => {
       );
     });
   });
+
+  describe("in bug1802888.pdf", () => {
+    let pages;
+
+    beforeAll(async () => {
+      pages = await loadAndWait("bug1802888.pdf", getSelector("30R"));
+    });
+
+    afterAll(async () => {
+      await closePages(pages);
+    });
+
+    it("must check field value is treated by default as a number", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await page.waitForFunction(
+            "window.PDFViewerApplication.scriptingReady === true"
+          );
+
+          await page.type(getSelector("30R"), "123", {
+            delay: 10,
+          });
+          await page.click(getSelector("31R"));
+          await page.type(getSelector("31R"), "456", {
+            delay: 10,
+          });
+          await page.click(getSelector("26R"));
+          await page.click(getSelector("27R"));
+          await page.waitForFunction(`${getQuerySelector("26R")}.value !== ""`);
+
+          const value = await page.$eval(getSelector("26R"), el => el.value);
+          expect(value).withContext(`In ${browserName}`).toEqual("579");
+        })
+      );
+    });
+  });
 });
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index a2f82e23b..f5b148498 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -556,3 +556,4 @@
 !textfields.pdf
 !freetext_no_appearance.pdf
 !issue15690.pdf
+!bug1802888.pdf
diff --git a/test/pdfs/bug1802888.pdf b/test/pdfs/bug1802888.pdf
new file mode 100755
index 000000000..08ddcb5a3
Binary files /dev/null and b/test/pdfs/bug1802888.pdf differ
diff --git a/test/unit/scripting_spec.js b/test/unit/scripting_spec.js
index bfcc10a56..87274f7ee 100644
--- a/test/unit/scripting_spec.js
+++ b/test/unit/scripting_spec.js
@@ -346,7 +346,7 @@ describe("Scripting", function () {
       expect(send_queue.has(refId)).toEqual(true);
       expect(send_queue.get(refId)).toEqual({
         id: refId,
-        value: "123",
+        value: 123,
       });
     });
 
@@ -826,7 +826,7 @@ describe("Scripting", function () {
         expect(send_queue.get(refId)).toEqual({
           id: refId,
           siblings: null,
-          value: "123456.789",
+          value: 123456.789,
           formattedValue: null,
         });
       });
@@ -1006,7 +1006,7 @@ describe("Scripting", function () {
         expect(send_queue.get(refId)).toEqual({
           id: refId,
           siblings: null,
-          value: "321",
+          value: 321,
           formattedValue: null,
         });
       });