[@smith512 Participant 5 years, 9 months ago]

Yes. I copied bbpress’s template to my child theme, and not I put my original template but I add codes to bbpress’s templates.

For example,
before “form-user-register.php”
<input type="text" name="user_login" value="<?php bbp_sanitize_val( 'user_login' ); ?>" size="20" id="user_login" maxlength="100" autocomplete="off" />

after “form-user-register.php”
<input type="text" name="user_login" value="<?php bbp_sanitize_val( 'user_login' ); ?>" size="20" id="user_login" maxlength="100" autocomplete="off" placeholder="half-width characters" />