Cursor position does not visibly update with option-delete (whole word delete) key combination

I’m using:

• Textastic 9.9
• iPad Pro 12.9 (4th generation)
• iPadOS 16.2
• Apple bluetooth keyboard

The option-delete key combinatian deletes the word to the left of the cursor, and each additional press deletes an additional word, as expected. However, the cursor position does not visibly update. This behaviour is new since I updated Textastic from the previous version (9.8?) to 9.9 this week.

It’s as if the real cursor becomes invisible when option-delete is first pressed, leaving behind a ghost cursor. The invisible real cursor moves correctly, while the ghost cursor does not move. The real cursor becomes visible in its correct position, and the ghost cursor disappears, as soon as I type something or use an arrow key to move the cursor.

The arrow keys don’t always cause the real cursor to reappear. For example, if the cursor is at the end of the file when I press option-delete, then pressing the right-arrow key will have no effect, probably because in that case the right-arrow key would not have moved the cursor anyway.