Dev Build 2132 is out now, with buttons in the gutter for folding indented regions. You can disable them with the new fold_buttons file setting.
There’s also a fix for a long standing issue that was tripping up SublimeCodeIntel: previously, hiding the auto complete window from an on_modified callback could cause memory corruption, when the on_modified callback was triggered from the auto complete window itself. Doing this will now no longer cause any issues. Please let me know if you still experience any crashes when using SublimeCodeIntel with 2132.