cannot delete argument for kw

[2Eagle2]

When having keyword with multiple parameters and try to delete one argument, the argument is not deleted.
When try to delete argument with backspace, the argument is replaced by BS symbol.
when deleting it with delete button the argument is not deleted

When trying to delete it manually in text edit tab, when press an apply button an exception occur:

Traceback (most recent call last):
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 298, in
ButtonWithHandler(self, 'Apply Changes', handler=lambda e: self.save()))
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 430, in save
self._editor.utf8_text):
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 179, in validate_and_update
if not self._sanity_check(data, m_text):
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 190, in _sanity_check
formatted_text = data.format_text(text)
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 245, in format_text
return self._txt_data(self._create_target_from(text))
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 241, in _create_target_from
FromStringIOPopulator(target).populate(src)
File "C:\Python\Python36\lib\site-packages\robotide\editor\texteditor.py", line 530, in populate
robotapi.TxtReader().read(content, self)
File "C:\Python\Python36\lib\site-packages\robotide\lib\robot\parsing\tsvreader.py", line 26, in read
for row in Utf8Reader(tsvfile).readlines():
File "C:\Python\Python36\lib\site-packages\robotide\lib\robot\utils\utf8reader.py", line 47, in readlines
yield self._decode(line, remove_bom=index == 0)
File "C:\Python\Python36\lib\site-packages\robotide\lib\robot\utils\utf8reader.py", line 50, in _decode
if remove_bom and content.startswith(BOM_UTF8):
TypeError: startswith first arg must be str or a tuple of str, not bytes

[2Eagle2]

Debug.zip

The bug can be easily reproduced on attached test case by simply adding or removing arguments

[2Eagle2]

misclicked close issue

[HelioGuilherme66]

Thanks for the bug and the fix.
(I did just small adjustment to the import)