Scrolling implementation is broken on a previous page

[klfyt]

Just don't travel to previous page anywhere. >:]

[...]
Furthermore interaction with scrollbar might break something (.../ubuntu/+source/webkit/+bug/1830748)
which leaves only viable scrolling options
Page Up and Page Down.

* delete browser image cache if you accidentally press scrollbar and restart browser

[fakenxid (fakenxid-redhat-bugs)]

Description of problem:
If you reach end of text it is not advisable to hit
Page Down or vice versa (if you reach top do not hit Page Up).
Similarly do not change direction with these keys.

Version-Release number of selected component (if applicable):
What is responsible for Page Up/Page Down navigation?

How reproducible:
always (anywhere you can navigate with Page Up/Down)

Steps to Reproduce:
1. reach end of text
2. hit Page Down

1. start moving with Page Down
2. change direction with Page Up

Actual results:
stuff gets slower

Expected results:
Page Up/Down does not affect speed in any way.

Additional info:
I hope this helps. >:]

[fakenxid (fakenxid-redhat-bugs)]

How to keep things fast:

[ ] <-- this is scrollbar

Travel in only one direction:

[Page Down --> ]
[ <-- Page Up]

How to reset speed if it gets slow:

[Page Up ]
[ Page Down]
[Page Up ] don't hit last position more than one time

* delete browser image cache if you accidentally press scrollbar and restart browser