It adds a global shortcut

The thing I hate about applications like this is that they somehow think they are the most important application on your computer. Todoist sets a “global” shortcut which other *extremely* popular application - Chrome - already uses and breaks the functionality of chrome if you have todoist open. When in Chrome, if you’re bringing up a tab that you closed a moment ago, you can press [ Command ] + [ Shift ] + [ T ] - Todoist highjacks this global namespace making it bring their application to the forefront - I had to disable this setting. This shouldn’t be the default behavior - this should be a setting that a user has to seek out to enable. Once they fix this issue, I will give them a higher rating.

überBuilder about Todoist: To-Do List & Tasks, v6.3.16