Fixed issue with track

cvat-core/src/annotations-collection.js

@@ -857,15 +857,25 @@
                 ? (frame) => frame + 1
                 : (frame) => frame - 1;
             for (let frame = frameFrom; predicate(frame); frame = update(frame)) {
-                if (frame in this.shapes) continue;
-                if (frame in this.tags) continue;
+                if (frame in this.shapes && this.shapes[frame].some((shape) => !shape.removed)) {
+                    continue;
+                }
+                if (frame in this.tags && this.tags[frame].some((tag) => !tag.removed)) {
+                    continue;
+                }
+                const filteredTracks = this.tracks.filter((track) => !track.removed);
                 let found = false;
-                for (const track of this.tracks) {
-                    if (frame in track.shapes) {
+                for (const track of filteredTracks) {
+                    const { prev, first } = track.boundedKeyframes(frame);
+                    const last = prev === null ? first : prev;
+                    const lastShape = track.shapes[last];
+                    const isKeyfame = frame in track.shapes;
+                    if (first <= frame && (!lastShape.outside || isKeyfame)) {
                         found = true;
                         break;
                     }
                 }
+
                 if (found) continue;
 
                 return frame;