Screen sprite bug

Version 1.4 - PC. Windows 10.

Wandering around an Ith realm, found two large sprite icons moving back and forth.

Sprites continued to be on screen (even after battle) until I moved offscreen away from them.

Edit: It was version 1.4, not 1.3.23.

Happened again in the next Ith realm.

If you notice anything that might be related to this bug occurring, please let me know!