openttd: /mnt/disk2/spiele/OpenTTD/trunk_clean/src/core/math_func.hpp:141: T Clamp(T, T, T) [with T = int]: Assertion `min <= max' failed.

Program received signal SIGABRT, Aborted.
0x00007ffff54574c9 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007ffff54574c9 in raise () from /lib64/libc.so.6
#1  0x00007ffff5458958 in abort () from /lib64/libc.so.6
#2  0x00007ffff5450296 in __assert_fail_base () from /lib64/libc.so.6
#3  0x00007ffff5450342 in __assert_fail () from /lib64/libc.so.6
#4  0x000000000086a67c in Clamp<int> (max=<optimized out>, min=<optimized out>, a=<optimized out>) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/core/math_func.hpp:141
#5  Clamp (max=<optimized out>, min=<optimized out>, a=<optimized out>) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/core/math_func.hpp:165
#6  EnsureVisibleCaption (w=w@entry=0x1692ac0, nx=-12, ny=0) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/window.cpp:2014
#7  0x000000000086c681 in ResizeWindow (w=w@entry=0x1692ac0, delta_x=<optimized out>, delta_y=<optimized out>, clamp_to_screen=clamp_to_screen@entry=true) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/window.cpp:2065
#8  0x000000000086c7ca in Window::ReInit (this=this@entry=0x1692ac0, rx=rx@entry=0, ry=ry@entry=0) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/window.cpp:972
#9  0x000000000086f545 in ReInitAllWindows () at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/window.cpp:3272
#10 0x0000000000661b75 in LoadStringWidthTable (monospace=false) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/gfx.cpp:1143
#11 0x00000000007fe22d in CheckForMissingGlyphs (base_font=base_font@entry=true, searcher=0x11e8150 <CheckForMissingGlyphs(bool, MissingGlyphSearcher*)::pack_searcher>, searcher@entry=0x0)
    at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/strings.cpp:2131
#12 0x00000000007157f0 in LoadIntroGame (load_newgrfs=load_newgrfs@entry=false) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/openttd.cpp:343
#13 0x00000000007173d2 in openttd_main (argc=<optimized out>, argv=<optimized out>) at /mnt/disk2/spiele/OpenTTD/trunk_clean/src/openttd.cpp:855
#14 0x00007ffff5443be5 in __libc_start_main () from /lib64/libc.so.6
#15 0x000000000056f21d in _start () at ../sysdeps/x86_64/start.S:122