0000997: Sample keeps reverting back or gets "corrupted" on specific tracker module

ID	Project	Category	View Status	Date Submitted	Last Update

0000997	OpenMPT	General	public	2017-07-31 13:01	2017-07-31 13:08

Reporter	BitRot2	Assigned To
Priority	normal	Severity	minor	Reproducibility	always
Status	closed	Resolution	no change required
Product Version	OpenMPT 1.26.12.00 / libopenmpt 0.2-beta26 (upgrade first)

Summary	0000997: Sample keeps reverting back or gets "corrupted" on specific tracker module
Description	Module name: 2much.mod DL (clean) : https://modarchive.org/index.php?request=view_by_moduleid&query=68043 Check attachment for the exact file that problem occurred When editing, the sample #1 stays as is. But when playing, it reverts back to what it was before, or redraws itself on loop region randomly, resulting in an undesirable effect. If edited during playback, some or all parts of the sample (any sample, but it's spotty) will either jump around in amplitude or shape or revert back to previous shape. OS: Windows 7 x64 SP1
Steps To Reproduce	Load the module Go to Samples Click on Sample Drawing Doodle around Press play and view other sample Sample reverts back to previous shape and/or is not in the shape one made
Tags	No tags attached.

Has the bug occurred in previous versions?	Yes (1.26.07.00)
Tested code revision (in case you know it)

Date Modified	Username	Field	Change
2017-07-31 13:01	BitRot2	New Issue
2017-07-31 13:07	Saga Musix	Status	new => closed
2017-07-31 13:07	Saga Musix	Resolution	open => no change required
2017-07-31 13:07	Saga Musix	Note Added: 0003125
2017-07-31 13:08	Saga Musix	Note Edited: 0003125

Saga Musix 2017-07-31 13:07 administrator ~0003125 Last edited: 2017-07-31 13:08	Yes, the EFx effect (Invert Loop) does exactly that. It's a feature of the MOD format. You can read more about it in the effect reference section in the manual.