Hi Nicholas Woods,
Welcome to the forums
I'm very sorry to hear this! Resetting your app back to it's default settings should return this for you.
You can reset your app back to its default settings by holding down the CTRL key while launching the app. When the Clear User Data window appears, click Select All and then Clear. The app will now open.
Be aware that resetting your app back to its default settings will lose any custom settings such as keyboard shortcuts and brushes etc. To backup such settings before resetting the app, please watch our Affinity - Exporting User Settings and Keyboard Shortcuts video. https://player.vimeo.com/video/189596577/
Please do let me know if this helps!
Nicholas Woods got a reaction from Dan C in Mac Photo Context Toolbar missing?