[Bug] Cannot insert a link after a left curly bracket appears

[UlyssesZh]

Cannot insert a link after a left curly bracket appears.

To reproduce:

# test.rb
class TestClass
  # {test0}[https://github.com]
  # \{
  # {test1}[https://github.com]
  # {test2}[https://github.com]
  def meth0
  end
  # {test0}[https://github.com]
  # \}
  # {test1}[https://github.com]
  # {test2}[https://github.com]
  def meth1
  end
  # {test0}[https://github.com]
  # <tt>{</tt>
  # {test1}[https://github.com]
  # {test2}[https://github.com]
  def meth2
  end
  # {test0}[https://github.com]
  # <tt>}</tt>
  # {test1}[https://github.com]
  # {test2}[https://github.com]
  def meth3
  end
  # {test0}[https://github.com]
  # <tt>\{</tt>
  # {test1}[https://github.com]
  # {test2}[https://github.com]
  def meth4
  end
  # {test0}[https://github.com]
  # <tt>\}</tt>
  # {test1}[https://github.com]
  # {test2}[https://github.com]
  def meth5
  end
end

rdoc test.rb

Actual result:

Expected result:

[nobu]

This also happens at https://docs.ruby-lang.org/en/master/Dir.html#method-c-glob.