diff --git a/CHANGELOG.md b/CHANGELOG.md
index 93db8bb5..d28c576e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Wrong resolution for resizing a shape (<https://github.com/opencv/cvat/pull/1667>)
 - React warning because of not unique keys in labels viewer (<https://github.com/opencv/cvat/pull/1727>)
 - A couple of exceptions in AAM related with early object activation (<https://github.com/opencv/cvat/pull/1755>)
+- Propagation from the latest frame (<https://github.com/opencv/cvat/pull/1800>)
+- Number attribute value validation (didn't work well with floats) (<https://github.com/opencv/cvat/pull/1800>)
 
 
 ### Security
diff --git a/cvat-core/package.json b/cvat-core/package.json
index 5c62139a..29bc84cd 100644
--- a/cvat-core/package.json
+++ b/cvat-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-core",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "description": "Part of Computer Vision Tool which presents an interface for client-side integration",
   "main": "babel.config.js",
   "scripts": {
diff --git a/cvat-core/src/annotations-collection.js b/cvat-core/src/annotations-collection.js
index 1d9fc0fc..5dd85107 100644
--- a/cvat-core/src/annotations-collection.js
+++ b/cvat-core/src/annotations-collection.js
@@ -797,15 +797,17 @@
                 .concat(imported.tracks)
                 .concat(imported.shapes);
 
-            this.history.do(HistoryActions.CREATED_OBJECTS, () => {
-                importedArray.forEach((object) => {
-                    object.removed = true;
-                });
-            }, () => {
-                importedArray.forEach((object) => {
-                    object.removed = false;
-                });
-            }, importedArray.map((object) => object.clientID), objectStates[0].frame);
+            if (objectStates.length) {
+                this.history.do(HistoryActions.CREATED_OBJECTS, () => {
+                    importedArray.forEach((object) => {
+                        object.removed = true;
+                    });
+                }, () => {
+                    importedArray.forEach((object) => {
+                        object.removed = false;
+                    });
+                }, importedArray.map((object) => object.clientID), objectStates[0].frame);
+            }
 
             return importedArray.map((value) => value.clientID);
         }
diff --git a/cvat-core/src/annotations-objects.js b/cvat-core/src/annotations-objects.js
index c5d0e035..ef828653 100644
--- a/cvat-core/src/annotations-objects.js
+++ b/cvat-core/src/annotations-objects.js
@@ -156,8 +156,7 @@
 
         if (type === AttributeType.NUMBER) {
             return +value >= +values[0]
-                && +value <= +values[1]
-                && !((+value - +values[0]) % +values[2]);
+                && +value <= +values[1];
         }
 
         if (type === AttributeType.CHECKBOX) {
diff --git a/cvat-ui/package-lock.json b/cvat-ui/package-lock.json
index f521fbce..6c222da0 100644
--- a/cvat-ui/package-lock.json
+++ b/cvat-ui/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/cvat-ui/package.json b/cvat-ui/package.json
index 0db6a04d..6aa9558b 100644
--- a/cvat-ui/package.json
+++ b/cvat-ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cvat-ui",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "description": "CVAT single-page application",
   "main": "src/index.tsx",
   "scripts": {
diff --git a/cvat-ui/src/components/labels-editor/label-form.tsx b/cvat-ui/src/components/labels-editor/label-form.tsx
index c9a60fde..b40e0b8a 100644
--- a/cvat-ui/src/components/labels-editor/label-form.tsx
+++ b/cvat-ui/src/components/labels-editor/label-form.tsx
@@ -239,21 +239,27 @@ class LabelForm extends React.PureComponent<Props, {}> {
                 .split(';')
                 .map((number): number => Number.parseFloat(number));
             if (numbers.length !== 3) {
-                callback('Invalid input');
+                callback('Three numbers are expected');
             }
 
             for (const number of numbers) {
                 if (Number.isNaN(number)) {
-                    callback('Invalid input');
+                    callback(`"${number}" is not a number`);
                 }
             }
 
-            if (numbers[0] >= numbers[1]) {
-                callback('Invalid input');
+            const [min, max, step] = numbers;
+
+            if (min >= max) {
+                callback('Minimum must be less than maximum');
+            }
+
+            if (max - min < step) {
+                callback('Step must be less than minmax difference');
             }
 
-            if (+numbers[1] - +numbers[0] < +numbers[2]) {
-                callback('Invalid input');
+            if (step <= 0) {
+                callback('Step must be a positive number');
             }
 
             callback();