Pager for context-settings is broken

[unnamed1337]

Bug report

Summary

When I open the context-settings of any context, the page-size does not match the amount of displayed items. For example the default is set to 20 and i only get 11 displayed items (of 12 items total). Changing the value doesn't make it better.

Step to reproduce

1. Edit any Context with context-settings
2. open context-settings tab
3. play around with the "Per Page"-value ;)

Observed behavior

page-size	displayed items
4	2
5	3
6	3
7	4
8	5
9	5
10	6
12	7
15	8
18	10
19	11
20	11
21	12

Expected behavior

page-size	displayed items
4	4
5	5
6	6
7	7
8	8
9	9
10	10
12	12
15	15
18	18
19	19
20	20
21	21

Environment

MODX version: MODX Revolution 2.7.1-pl apache/nginx and version: Apache 2.4.29 mysql version: mysql Ver 14.14 Distrib 5.7.27, for Linux (x86_64) using EditLine wrapper browser: Chrome Version 77.0.3865.90 (Official Build) (32-bit), Firefox 69.0 (32-Bit)

[Mark-H]

Try making a list of context settings in the database and comparing that against the ones that are missing. Hopefully that will help identify a pattern - perhaps settings you don't have namespace access for are hidden?

[unnamed1337]

I get all settings, if I set the page-size high enough, which works for me as a workaround. In my case anything >= 21. All settings are inside the core namespace and I also have full access.

Also this happens every context (currently 15) and I can't come up with any SQL query, that would give me something else than the 12 settings ;)