Problem with background probabilites as matrix

[gcambray]

Hi there,
thanks for this excellent package
I'm trying to provide a dataframe as input for the bg argument with the following call:
logomaker(selected, type = "EDLogo", bg = bg_freq)

but the std messages tells me:

using a background with equal probability for all symbols
Analyzing the positional frequency matrix
color_type not provided, so switching to per_row option for
            color_type
using a background with equal probability for all symbols
frame width not provided, taken to be 1
frame width not provided, taken to be 1

So it looks like it is not recognizing the matrix as a correct input
Tried reducing the matrix to a vector with eg
logomaker(selected, type = "EDLogo", bg = apply(bg_freq, 1, median)
and this works fine

The bg_freq matrix I'm using looks like this:

> bg_freq
             X1         X2         X3         X4
A    0.05279903 0.04980073 0.05216351 0.05247792
R    0.07329378 0.07228652 0.07226239 0.07359076
N    0.03852414 0.04015821 0.03832839 0.03770225
D    0.03353948 0.03509813 0.03223993 0.03155547
C    0.03961352 0.04219518 0.04243954 0.04012201
E    0.02266077 0.02258770 0.02070860 0.02267954
Q    0.02168435 0.02120837 0.01836090 0.02008950
G    0.06898353 0.06675281 0.07242395 0.07669331
H    0.03605946 0.03450182 0.03327166 0.03264350
I    0.04746946 0.04550153 0.05004575 0.04720432
L    0.09994603 0.09670940 0.09729298 0.09461981
K    0.02239764 0.02331004 0.02001609 0.02170547
M    0.02649304 0.02574321 0.02573282 0.02503830
F    0.05888548 0.06087385 0.06871872 0.06445573
P    0.04518813 0.04547472 0.04307440 0.04472590
S    0.09771599 0.09989207 0.09634974 0.09773208
T    0.04927112 0.05092396 0.05147100 0.04962240
W    0.02641661 0.02564366 0.02608376 0.02669080
Y    0.04525383 0.04639751 0.04625036 0.04635929
V    0.07226708 0.07094374 0.07230865 0.07268440
STOP 0.02153753 0.02399685 0.02045687 0.02160725

The selected input looks like this:

> selected
        X1     X2    X3    X4
A     4391    312 18522 36137
R     1892    448 19556   754
N    15031     69 14746  9056
D    79066      8 20538 28701
C     6862    100  5082  5329
E    20854      1 11766 30431
Q     6055      3 15775 18050
G     2804    181 11035  3275
H    25443   2350  7719 14401
I     7118   6464 17796  4061
L    20541  49420 33519 30211
K     1706     57 12112   749
M     5246   8809 10347  8940
F    27814  94952  6160  6547
P       13    231  7385  8387
S    28827    252 36469 49113
T    13302   5898 24544 24978
W     8027   8266  2746  1192
Y    30918 138029  7065 12714
V    11667   1750 34702 24573
STOP    48     25    41    26

Is there something wrong with my input or is that a bug?

Thanks for your help!