Poppy Playtime Chapter 5 L Button Not Working on Nintendo Switch

I am playing Poppy Playtime Chapter 5 on Nintendo Switch, and I am experiencing a serious control issue in the game. When I press the L button on the Joy-Con, the character does not sprint, and the Glowby feature also does not work.

I purchased the game today and spent approximately three hours trying different things, but the issue has not been resolved. I also tried closing and reopening both the console and the game, but the problem continues.

I would like the developer to investigate this issue as soon as possible and release the necessary update to ensure that the sprint function assigned to the L button and the Glowby feature work properly.