Randomly text thread cursor/function appears when clicking on text boxes

Randomly, the cursor changes to thread text when clicking anywhere on a text box.

It happens sometimes when trying to select a key object for alignment, when double-clicking on a text box to edit its content, when a text box is selected and I click outside of it (trying to deselect the text box). It doesn’t matter where in the text box I click (meaning, it’s not that I’m clicking on the out port by mistake).

I already updated to the latest version, restarted my laptop, quit and restarted InDesign just in case… It’s been happening for days.

InDesign version: 21.4.1
macOs version: Tahoe 26.5.1