Paint bucket acts "weird"

[PieterJW]

GIMP 3.0.6 on Linux Mint 21.3 Cinnamon
Using the paint bucket tool, sections that were already filled change color.
I made an image with several sections that I want to fill with the paint bucket. 
I filled several sections with red without a problem.
I start filling the next sections with pink (see settings below) When I fill the first empty section with pink, no problem. When I click the second empty section, it is filled with pink, but the first pink section changes to red. When I click the third section, the second changes to red as well. When I click the second section again, that one turns pink but the third one goes to red.
The sections are closed; there's no "leakage".
I tried closing and restarting the program, but that didn't change anything.

I hope this description makes sense. I wanted to attach a video but that didn't work.

Does anybody know why this happens and - more importantly - how to prevent this?

Foreground color: pink
Background color: white 
Tool settings:
FG color: pink
BG color: white
Mode: normal
Fill type: FG color fill
Affected area: fill similar colors
Finding similar colors: Fill transparent areas
Threshold: 116,1
Fill by: composite

Thank you.

[rich2005]

Is the Image in Indexed Mode ? ie. What does Image -> Mode show. If it is Indexed, then  change to RGB

Otherwise
Post a screenshot of your whole gimp interface showing layers and tool options as well as any active selections.

EDIT: Starting to guess about your image but if the shapes are on separate transparent layers then lock the alpha channel before filling. A quick example https://sendvid.com/b9mbddww

[PieterJW]

(9 hours ago)rich2005 Wrote: Is the Image in Indexed Mode ? ie. What does Image -> Mode show. If it is Indexed, then  change to RGB

Otherwise
Post a screenshot of your whole gimp interface showing layers and tool options as well as any active selections.

EDIT: Starting to guess about your image but if the shapes are on separate transparent layers then lock the alpha channel before filling.  A quick example https://sendvid.com/b9mbddww

Thanks for your reply.
Image is in RGB mode.
The shapes are on one transparent layer.
The screenshot is attached.

[rich2005]

I do not know. I can not figure out your workflow.  There are layer effects (fx) which will affect the outcome.  Try applying the (fx) as this screenshot and then try whatever method previously used.

   

----------------
For line drawing you can just use two layers, the line drawing and a transparent layer for  the fill.

Using fuzzy select tool.
Set the mode to Add (second icon)
Set Sample Merged
With a default threshold (15) enable draw mask and that adjusts as you drag the mouse in the area.

Then fill the areas with colour. Set bucket fill to  Fill whole selection.  
Important Edit -> Select None before moving on to the next areas.

If you can follow it, a quick video of that: https://sendvid.com/v9g5ym2c

[PieterJW]

(4 hours ago)rich2005 Wrote: I do not know. I can not figure out your workflow.  There are layer effects (fx) which will affect the outcome.  Try applying the (fx) as this screenshot and then try whatever method previously used.



----------------
For line drawing you can just use two layers, the line drawing and a transparent layer for  the fill.

Using fuzzy select tool.
Set the mode to Add (second icon)
Set Sample Merged
With a default threshold (15) enable draw mask and that adjusts as you drag the mouse in the area.

Then fill the areas with colour. Set bucket fill to  Fill whole selection.  
Important Edit -> Select None before moving on to the next areas.

If you can follow it, a quick video of that: https://sendvid.com/v9g5ym2c

Perfect! Thank you very much for your elaborate answer! Much appreciated!
I didn't know what the fx stood for and how that got there (still don't) but I clicked on the X to remove them and now the paint bucket works as expected.
Solved!

(I've been using GIMP for many years but never became an advanced user)

[rich2005]

For anyone maybe just upgrading from an earlier Gimp version.

All about layer effects: https://docs.gimp.org/3.0/en/gimp-using-...fects.html

However , in the tool(s) where layer effects are applied it is possible to disable and the effect is applied immediately, as with previous Gimp.