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Crash on undoing masking of values

Requirements

  • I searched through the issues if the issue already exists

Steps to reproduce

  1. Open the project file: bars_comp_002.lml
  2. Mask the first row in the spreadsheet.
  3. Undo the masking.

Expected

LabPlot shouldn't crash on undoing the of masking values.

Observed

LabPlot crashes on undoing the masking of values in the project file.

I checked two other scenarios and undoing masking works for 1. values in a spreadsheet without a plot and 2. for a spreadsheet with values included in a histogram or in a xy-curve. For some reason LabPlot crashes with this project file.

LabPlot Version

Debug build 
System: Ubuntu 24.04 LTS
Locale: English,United States (Decimal point ',', Group separator ' '
Number settings: Decimal point ',', Group separator ' ', Exponential 'e', Zero digit '0', Percent '%', Positive/Negative sign '+'/'-' (Updated on restart)
Architecture: x86_64-little_endian-lp64
Kernel: linux 6.8.0-36-generic
C++ Compiler: GNU 13.2.0
C++ Compiler Flags: -g -O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fdebug-prefix-map=/build/labplot-HhBN0R/labplot-2.10.1+git202406300147~ubuntu24.04.1=. -flto=auto -ffat-lto-objects -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=3 -fno-operator-names -fno-exceptions -Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security -Wno-long-long -Wpointer-arith -Wundef -Wnon-virtual-dtor -Woverloaded-virtual -Werror=return-type -Werror=init-self -Wvla -Wdate-time -Wsuggest-override -Wlogical-op -Wall -Wextra -Wundef -Wpointer-arith -Wunreachable-code -Wunused -Wdeprecated-declarations -fno-omit-frame-pointer -fstack-protector -fexceptions -std=c++17 -O2 -Wcast-align -Wswitch-enum -fvisibility=default -pedantic -Wzero-as-null-pointer-constant