Select all cmd-shift-G does not select all

[dearfrankg]

• VSCode Version: Version 1.17.1 (1.17.1)
• OS Version: macos sierra 10.12.6 (16G29)

Steps to Reproduce:

1. Create a file with 10k sql insert statements -->

INSERT INTO tabel (one, two, three)
VALUES
(1, 'value2', 3, 4),
(1, 'value2', 3, 4),
... // 10k lines
(1, 'value2', 3, 4);

2. Highlight the open paren and select all with cmd-shift-G

Scroll down and notice that only 2k are selected and 8k are not.

Reproduces without extensions: Yes/No

Don't know

[alexdima]

Duplicate of #5887