When I use Pencil tool...

[동현이31023582]

Hi everyone. Is there anyone who have same situation with me?
When I use Pencil tool, I just changed the Pencil to Eraser tool (with a 'E' key). But I erase only one time, the Erase tool changed to Pencil tool automatically. (I have more things to erase!!)

If there is someone who got this situation & know to soluve this problem,

please tell me the answer....

(It was happened in Photoshop 2020)

Thank you for reading

[c.pfaffenbichler]

Could you please post a screenshot with the pertinent Panels (Toolbar, Layers, Brushes, Options Bar, …) visible? 

Did you hit »E« shortly or did you keep it pressed for a while? 

[동현이31023582]

Geeeee! Now I know that if I press 'E' (and keep holding the key), temporary Eraser activated!!

That is the reason when I off my finger it was back to the pencil tool. Thanks a lot to your comment.

+ By the way, is there an option to delete 'temporary Eraser'?? I can't find the option in Preferences window...

[c.pfaffenbichler]

I know of no method to disable that behaviour. 

It’s similar to spring-loading the Rotate View Tool (R). 

[동현이31023582]

OK, I'll be more careful when using the pencil tool.

Thanks for your comment and advice!