This is a 'feature' of Samsung's keyboard, default on Samsung android phones. I did look at Samsung's settings and did not see the ability to alter this. Use another keyboard to fix, which I did, such as Gboard by Google.
While I do like the ability quickly delete word by word also, that should be provided by a another key, not shared with the character by ...
Well! I'm not sure why, but somehow my Default Keyboard setup was back to the Samsung keyboard (the default). So I guess there was a new version which was updated and after updating, the Default keyboard switch was back to the default.
Editing that one setting and the Hacker's Keyboard was back in business.
The selection of the Default Keyboard on my ...
You can insert a tab as follows:
Copy from somewhere (I used Simplenote) a tab.
Go to Parameters → Dictionaries → Personal dictionaries from the Google Keyboard.
Choose your language and click on "add".
Paste the tab in the first field and define some shortcut.
Now if you type your shortcut, Gboard will propose the tab in the auto-correction bar. I tried ...