Comment 2 for bug 1837953

Commit hash: 08d18c8e306e30904d579509be767af70a65500d
Environment tested: Master
Browser tested: Chrome
Theme used: Raw

PRECONDITIONS:
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1) Mahara User1 exists (no roles)
2) Portfolio page exists with an Image gallery block
3) Image gallery block set up as follows:
    a) gallery has 5 images
    b) Style = Slideshow
    c) Width = 600
    d) Retractable = No

TEST STEPS:
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1) Log in as Mahara User1
2) View the portfolio page as mentioned above
3) Click the advance "chevron icons" to the right
4) Verify that the portfolio page does not scroll up or down ✔

Catalyst QA Approved ✔